Advertisements
Advertisements
Question
A is 25% older than B. By what percent is B younger than A?
Solution
Alternative Method:
Let age of B = 100 years
∴ Age of A
= 100 + 100 x `(25)/(100)`
= 125 years
Difference in age by which A is older than B
= 125 - 100
= 25 years
∴ % by which B is younger than A
= `(25)/(125) xx 100`
= 20%
APPEARS IN
RELATED QUESTIONS
Find: 16.5% of 5000 metre
An auctioneer charges 8% for selling a house. If a house is sold for Rs.2, 30, 500; find the charges of the auctioneer.
Express the following percentage as a fraction and as a decimal number:
25 %
Find the resulting quantity when there is a 2.5% increase in the salary of ₹ 62,500.
Out of his monthly income of ₹ 2,500; a man spends ₹ 1,750. What percent of his income does he save every month?
A cricket team won 70 matches during a year and lost 28 matches and no results for two matches. Find the percentage of matches they won
Sunscreens block harmful ultraviolet (UV) rays produced by the sun. Each sunscreen has a Sun Protection Factor (SPF) that tells you how many minutes you can stay in the sun before you receive one minute of burning UV rays. For example, if you apply sunscreen with SPF 15, you get 1 minute of UV rays for every 15 minutes you stay in the sun.
A sunscreen with SPF 15 allows only `1/15` of the sun’s UV rays. What per cent of UV rays does the sunscreen abort?
The per cent of pure gold in 14 carat gold is about 58.3%. A 14 carat gold ring weighs 7.6 grams. How many grams of pure gold are in the ring?
5.2 is equal to ______.
Given below is a Mathematical term.
Find the percentage of consonants in the term.
