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:- The sale price sarees listed for Rs.400 after successive discount is 10% and 5% is?
Ques:- A person’s present age is two-fifth of the age of his mother. After 8 years, he will be one-half of the age of his mother. How old id the mother at present?
Recent Answer : Added by MAMIDI LIJITA SREE On 2023-01-21 17:36:34:
40
Ques:- A chicken farmer surveyed his flock with the following results. The farmer Has: 9 fat red roosters (male), 37 fat chickens 6 thin red roosters 2 fat red hens , 7 thin brown hens ,5 thin red hens 26 fat roosters (total) ,18 thin brown roostersAnswer the following questions about the flock(HINT: in your Venn diagram make a circle for fat, for male and for red). How many chickens are:
Recent Answer : Added by Admin On 2020-05-17 12:05:24:
a:37
b:22
c:50
d:11
e:25
f:27
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Ques:- If a clerk can process 80 cheques in half an hour, how many cheques can she process in a seven and one half hour day?
Recent Answer : Added by Kayode kolade On 2022-08-14 18:02:35:
1/2 Hr -> 80 Cheques
Per Hour -> 80 * 2 = 160
For 7 Hours -> 160 * 7 = 1120
For 7 1/2 Hour -> 1120 + 80 = 1200
clerk can process 1200 cheques in Sever & one half an hour day.
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Ques:- A heap of coconuts is divided into groups of 2, 3 and 5 and each time one coconut is left over. The least number of Coconuts in the heap is?
Recent Answer : Added by MB On 2021-11-19 18:20:08:
13. One group of each = 2+3+5 = 10 and 1 remainder for each = 1+1+1 = 3. 10+3 = 13
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Recent Answer : Added by J. Cody Stockwell On 2022-08-14 16:36:03:
The hour hand advances between individual numbers as the minute hand makes a full path around the hour. The hour hand was pointing directly at 3 at 3:00, but at 3:15 it has advanced 1/4 of the way between 3 and 4. The number of degrees between numbers 30 (because 360/12). That gives you 30/4 = 7.5. The number of degrees between the two hands is 7.5 degrees.
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Ques:- A man misses a bus by 40 minutes if he travels at 30 kmph. If he travels at 40 kmph, then also he misses the bus by 10 minutes. What is the minimum speed required to catch the bus on time?
Recent Answer : Added by DK BOSS On 2021-07-15 08:55:21:
the answer is 45 km/h
Define x:
Let the total distance be x.
Find the time needed in terms of x for speed at 30 km/h:
Find the time needed in term of x for 40 km./h:
Find the difference in time:
Solve x:
Find the total time needed to for the whole journey:
Given that he was 40 mins late:
Find the minimum speed needed:
Answer: The minimum speed is 45 km/h
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Ques:- Which state in India has the largest coastline?
A. Orissa
B. Gujarat
C. Tamilnadu
D. Andhra Pradesh
Recent Answer : Added by Parth Satish Laturia On 2022-08-14 16:44:46:
gujarat
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Ques:- The difference between the two digit number and the number obtained by interchanging its digits is 54. The difference between the digits is?
Recent Answer : Added by Sadman Sakib On 2022-01-08 16:06:25:
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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%