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Percentages

The base of the Triangle is increased by 40% what can be the maximum percentage increase in the length of the height so that the increase in area is restricted to a maximum of 60%?

  1. A 14.95% 24%
  2. B 14.98% 14%
  3. C 14.28% 33%
  4. D 14.45% 29%
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21 Attempts 1 Comment
Diksha Mehta 5 days ago
area of triangle is given by a= 1/2*b*h
Area increases by 60% means updated area will be, a+0.6a=1.6a
alsobase increases by 40% updated base will be 1.4b
so putting these updated values in area equation will give h=1.1428h
therefore increase in the height will be 14.28%

One aptitude question try to answer Paulson spends 75% of his income. His income is increased by 20% and he increased his expenditure by 10%. Find the percentage increase in his savings ?

1 Thanks 5 Comments
Aayush Yogi 12 days ago
Let the income of the man = x
then expenditure = 0.75x and savings = 0.25x
now after 20 % increment income = 1.2x and with 10 % increment in the expenditure it will be 0.75x*1.1 = 0.825x
so savings = 1.2x - 0.825x = 0.375x
so new % of savings relative to new income = (0.375x/1.2x)*100
= 0.3125*100 = 31.25 %

A man’s basic pay for a 40 hours’ week is Rs. 200. Overtimes is paid at 25% above the basic rate. In a certain week, he worked overtime and his total was Rs. 300. He therefore, worked for a total of (in hours):

1 Thanks 2 Comments
Shivani Nagaikar 12 days ago
46

The usage is increased by 25%. By what percentage should the rate decrease in order to keep the outgo constant? a) 30 b) 25 c) 20 d) 15

1 Comment
shiva Mk 9 days ago
c

If A = x% of y and B = y% of x, then which of the following is true? a) A is smaller than B. b) A is greater than B. c) Relationship between A and B cannot be determined. d) If x is smaller than y, then A is greater than B. e) None of these

3 Comments
Prakhar 24 days ago
none

These are very helpful while dealing with %, profit &Loss, alligations questions. Saves time.

9 Thanks 3 Comments
Kavipriya R 22 days ago
OK tq do u have any material for infoysis

Coconut oil is now being sold at rs.27 per kg. During last month, its cost was 24rs per kg. Find by how much percent a family should reduce its consumption, to keep the expenditure the same. (a)Price increases in fraction ? (b)Therefore, consumption decreases in fraction ? (c)Hence, Percentage decreases of consumption ?

4 Comments
Revanth Pabbathi 23 days ago
Price increased by (1/8)
Therefore consumption should reduce by (1/8+1) = 1/9 times viz., 11.11%

Himansh saves 10% of his income. If his income is increased by 20% and he saves 15% of the new income, by what percent his savings will increase?

  1. A 40% 23%
  2. B 60% 33%
  3. C 80% 40%
  4. D 70 5%
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1 Thanks 40 Attempts 2 Comments
Suprateek Shukla 1 month ago
Assume income 1000 saving is 10% ie 100
increase in income 20%=1200 saving 15% ie 1200*0.15=180
%saving increase=((180-100)/100)*100%

Krish's salary was decreased by 50% and subsequently increased by 50%. How much percentage does he gain or lose??

  1. A 50% lose 7%
  2. B 50% gain 30%
  3. C 25% lose 50%
  4. D 25% gain 13%
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46 Attempts 3 Comments
bhupender singh 1 month ago
c
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