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What number has to be added to each term of 3:5 to make the ratio 5:6?

A6

B7

C12

D13

Answer:

B. 7

Read Explanation:

Let the number to be added be x. Then, (3+x)/(5+x) = 5/6 => 6(3+x) = 5(5+x) => x = (25-18) = 7


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ഒരു സിലിണ്ടറിന്റെയും കോണിന്റെയും ആരം 3:4 എന്ന അനുപാതത്തിലാണ്. സിലിണ്ടറിന്റെയും കോണിന്റെയും വ്യാപ്തം 9:8 എന്ന അനുപാതത്തിലാണ്. അപ്പോൾ അവയുടെ ഉയരം തമ്മിലുള്ള അനുപാതം?