Ques:- to travel ‘m’ miles the time is ‘h’ hours,then what is the time taken to travel M miles.
Recent Answer : Added by Successor On 2021-03-31 15:32:35:
speed=mile/hour
.•. time taken to travel M miles is
So, time =distance/speed
=M/m/h
=Mh/m hrs
Ques:- 1) In a club there are certain no. of males and females. If 15 females are absent then no. of males will be twice that of females. If 45 males are absent then female strength will be 5 times that of males. Find no. of males actually present.
Recent Answer : Added by Admin On 2020-05-17 12:01:55:
Let the number of males be given the name M.
Let the number of females be given the name F.
If 15 females are absent, then M will be twice that of
present females.
This means that M = 2 * (F – 15)
M = 2 * F – 30.
or 2 * F – M = 30.
Now if in addition to the 15 females being absent, we also
have 45 males being absent,
then this gives the equation,
(F – 15) = 5 * (M – 45)
which simplifies to
F – 15 = 5 * M – 225
5 * M – F = 210
Pulling the equations together, we get
5 * M – F = 210
-M + 2 * F = 30
Multiply the first equation by 2, and keep the second
equation as is.
10 * M – 2 * F = 420
– M + 2 * F = 30
Add the equations.
9 * M = 450
M = 50
Verify answer.
Calculate F
from – M + 2 * F = 30
-50 + 2 * F = 30
2 * F = 30 + 50
F = 40.
If 15 females are absent, then number of males will be twice
that of females.
40 – 15 = 25.
50 = 2 * 25. Confirmed.
If also 45 males were absent, then female strength would be
5 times that of males.
Female strength is 25 due to the 15 females being absent.
50 – 45 = 5.
25 = 5 * 5. Confirmed.
Ques:- A started a business with an investment of Rs. 70000 and after 6 months B joined him investing Rs. 120000. If the profit at the end of a year is Rs. 52000, then the share of B is?
Recent Answer : Added by Abi On 2021-07-19 18:31:47:
24000
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Ques:- Two trains, each 100 m long, moving in opposite directions, cross other in 8 sec. If one is moving twice as fast the other, then the speed of the faster train is?
Ques:- If a sum of money compound annually amounts of thrice itself in 3 years. In how many years will it become 9 times itself.
A. 6
B. 8
C. 10
D. 12
E. 14
Recent Answer : Added by Mariam Mubarak On 2022-01-16 17:19:10:
6
Ques:- A man sells a horse for Rs.800 and loses something, if he had sold it for Rs.980, his gain would have been double the former loss. Find the cost price of the horse?
Recent Answer : Added by Dev On 2022-10-21 19:49:12:
860
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Ques:- There are four dogs/ants/people at four corners of a square of unit distance. At the same instant all of them start running with unit speed towards the person on their clockwise direction and will always run towards that target. How long does it take for them to meet and where?
Recent Answer : Added by Admin On 2020-05-17 12:01:43:
They will meet at the center of the square…as the
direction vector of all the ants/people change according to
the first person.
The independent path of each person taken will be spiral in
nature.
Ques:- P and Q start a business with Rs.6000 and Rs.8000 respectively. Hoe should they share their profits at the end of one year?
Recent Answer : Added by REGULLA RAJU On 2022-12-20 12:54:08:
Explanation:
They should share the profits in the ratio of their investments.
The ratio of the investments made by A and B =
6000 : 8000 => 3:4
Ques:- The rainfall amount decreases by 1% every year. Find out how much percent it exceeds by in 2001 compared to 2004?
Ques:- The average weight of 25 persons sitting in a boat had some value. A new person added to them whose weight was 46 kg only. Due to his arrival, the average weight of all the persons decreased by 5 kg. Find the average weight of first 25 persons?
Recent Answer : Added by Admin On 2022-09-29 15:59:24:
let the average of 25 person be x
total age of a person=average×no.of person
total age of 25 person=X×25
=25X
when a new person of 46kg come average decrease by 5kg(X-5)
Total age of 26 person =25x+46
Average age of 26 person=X-5
A/Q
.25X+46=26(X-5)
25X+46=26X-130
26X-25X=130+46
X =176
hence the av. of 25 person be 176kg
Ques:- Mr. Thomas invested an amount of Rs. 13,900 divided in two different schemes A and B at the simple interest rate of 14% p.a. and 11% p.a. respectively. If the total amount of simple interest earned in 2 years be Rs. 3508, what was the amount invested in scheme B?
Recent Answer : Added by Hari Shankar yadav On 2022-08-14 16:35:46:
In plan A 7500/- and other amounts in plan B
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Ques:- If the probability of observing a car in 30 minutes on a highway is 0.95, what is the probability of observing a car in 10 minutes (assuming constant default probability)?
Ques:- 5 * 5 ÷ 5 + 5 ÷ 5 = ?
Ques:- What is the 12th term of the series 2, 5, 8, …. ?
Recent Answer : Added by Mukesh On 2022-08-14 16:31:48:
a = 2
d = 5 – 2 = 3
Then 12th term is :
This in arithmetic progression
L = a + (12 – 1) d
L = 2 + 11 * 3
L = 2 + 33 = 35
Ques:- Subtracting 30 from a number, the remainder is one fourth of the number. Find the number?
Recent Answer : Added by Jonáš On 2022-08-14 18:01:24:
40
x – 30 = 1/4 x || *4
4x – 120 = x || -x + 120
3x = 120 || /3
x = 40
Ques:- Some people believe life is all about ?The survival of the fittest?. Today, others are suggesting, from new biological evidence, that life is in fact all about the '?The survival of the most cooperative?. What do you think?
Ques:- If water is called food, food is called drink, drink is called blue, blue is called red, red is called white and white is called brown, then what is the colour of “blood” ?
A. Blue
B. Red
C. Brown
D. White
E. Drink
Recent Answer : Added by Manga Ravikumar On 2022-03-09 16:45:58:
red
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Ques:- Two people are travelling through flight. Both have parachute and jump anywhere randomly i.e none of them knows who has jumped where.(Assume there's a big desert and they jump at any random location). Now, both of them have a single piece of paper on which they can write instructions before jumping and that's the only way they can meet each other. What would they write on paper before jumping ?
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speed=mile/hour
.•. time taken to travel M miles is
So, time =distance/speed
=M/m/h
=Mh/m hrs