Ques:- if length of a rectangle is incr by 20% and width is decr by 20% then area
Recent Answer : Added by Admin On 2020-05-17 11:59:46:
we know,
area=b*h
b gets increased by 20% i.e (b+0.20b)
h gets decreased by 20% i.e (h-0.20h)
rewriting the equation(area=b*h),
area=(b+0.20b)*(h-0.20h)
area=b(1+0.20)*h(1-0.20)
area=b(1.20)*h(0.80)
area=b*h*(1.20)*(0.80)
area=b*h*(0.96)
i.e new area=0.96 times the original area
if 100% was the original area,it has decreased to 96%
so,100%-96%= 4%
Ques:- You spend 21 dollars on vegetables at the store. You buy carrots, onions and celery. The celery cost half the cost of the onions. The onions cost have the cost of the carrots. How much did the onions cost?
Recent Answer : Added by Kom On 2021-08-06 04:58:03:
Actually
carrots=> $12
celery => $3
Ques:- In a certain company 20% of the men and 40% of the women attended the annual company picnic. If 35% of all the employees are men .What % of all the employee went to the picnic?
Recent Answer : Added by Admin On 2022-09-29 17:55:57:
Suppose that total 100 employees are in company….. out of that 35 are man and remaining 65 are women.
20% of man 35 = 20*35/100
40% of women = 40*65/100
total employees = 7+26 = 33 out of 100
so, Ans = 33 %
Ques:- The cost price of 13 articles is equal to the selling price of 11 articles. Find the profit percent?
Ques:- Meeta is two years older than Sunita. After six years the sum of their ages will be seven times their present age. Find out the age of Meeta
A. 6 years
B. 8 years
C. 10 years
D. Data inadequate
Recent Answer : Added by Ravi On 2022-09-15 16:36:09:
Data inadequate
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Ques:- A sum of Rs. 64 is made up of 80 coins which are either 100 paise or 50 paise coins. How many coins are of 50 paise?
A. 22
B. 32
C. 42
D. 52
Recent Answer : Added by Avisikta On 2021-12-09 18:39:36:
Let’s say,
I have x coins of 50 paise and (80-x) coins of 100 paise,so the equation is like this ,
50x + (80-x)*100 = 64*100
x = 32
So ,I have 32 coins of 50 paise
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Ques:- A box consists of 12 poles and 7 pices of nets totally weighing 1.75pounds. If each pole weighs .07 pound and each piece of net weighs .12 pounds. What is the weight of empty box
Recent Answer : Added by Appu On 2022-08-24 17:03:51:
1.75-1.68=0.07
Ques:- You have a car mileage 1km per liter, you have 3 thousand liters of petrol and have to cover 3000kms and give a way to cover that distance so that you can have some petrol remaining when you reached.
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Ques:- How many seconds will a train 100 meters long take to cross a bridge 150 meters long if the speed of the train is 36 kmph?
Recent Answer : Added by Reshma patro On 2022-03-09 16:35:28:
35 km/h = 10 m/s
Speed = Distance/Time
Distance= (100+150)m = 250m
Speed = 10 m/s
Time= 250/10 = 25s
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Ques:- There is a room with a door (closed) and three light bulbs. Outside the room there are three switches, connected to the bulbs. You may manipulate the switches as you wish, but once you open the door you can't change them. Identify each switch with its bulb.
Recent Answer : Added by DK BOSS On 2021-07-30 16:27:15:
Turn on a switch and leave it for some ten minutes. Turn it off, turn a second one on and open the door and go into the room. The glowing bulb corresponds to second switch. The bulb that is hot corresponds to first switch, as it was turned on for ten minutes and have heated up. The cold and not-glowing bulb corresponds to the third switch
Ques:- A tank is filled by three pipes with uniform flow. The first two pipes operating simultaneously fill the tank in the same during which the tank is filled by the third pipe alone. The second pipe fills the tank 5 hours faster than the first pipe and 4 hours slower than the third pipe. The time required by the first pipe is?
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Ques:- Manick received Rs. 6000 as his share out of the total profit of Rs. 9000 which he and Raunaq earned at the end of one year. If Manick invested Rs. 20,000 for 6 months, whereas Raunaq invested his amount for the whole year, what was the amount invested by Raunaq?
A. Rs. 3000
B. Rs. 4000
C. Rs. 5000
D. Rs. 6000
Recent Answer : Added by MANASA CHINTHALA On 2022-03-09 16:33:20:
P1/P2 = C1*T1/ C2*T2
where P1 = Partner 1’s Profit.
C1 = Partner 1’s Capital.
T1 = Time period for which Partner 1 contributed his capital.
P2 = Partner 2’s Profit.
C2 = Partner 2’s Capital.
T2 = Time period for which Partner 2 contributed his capital
6000/3000= 20,000*6/x*12
x=5000
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Ques:- What is the correct answer , if the a=b and i=0,i<=5;i++.then what
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we know,
area=b*h
b gets increased by 20% i.e (b+0.20b)
h gets decreased by 20% i.e (h-0.20h)
rewriting the equation(area=b*h),
area=(b+0.20b)*(h-0.20h)
area=b(1+0.20)*h(1-0.20)
area=b(1.20)*h(0.80)
area=b*h*(1.20)*(0.80)
area=b*h*(0.96)
i.e new area=0.96 times the original area
if 100% was the original area,it has decreased to 96%
so,100%-96%= 4%