You are given a math word problem and you are supposed to make use of mathematical concepts like probability, combinatorics, linear equations, sequences/series, or simple operators like addition, subtraction, division, or multiplication to answer the given question. Choose the best option from the 5 given options and report that option.

[Q]: Question: Two numbers are in the ratio 3 : 4. If their L.C.M. is 72. what is sum of the numbers?

 Option A: 42

 Option B: 56

 Option C: 76

 Option D: 84

 Option E: 85
[A]: Option A


[Q]: Question: Kiran is younger than Bineesh by 7 years and their ages are in the respective ratio of 7:9. How old is Kiran?

 Option A: 22.5

 Option B: 24.5

 Option C: 23.5

 Option D: 25.5

 Option E: 26.5
[A]: Option B


[Q]: Question: P and Q invested in a business. The profit earned was divided in the ratio 3 : 5. If P invested Rs 12000, the amount invested by Q is

 Option A: 30000

 Option B: 50000

 Option C: 40000

 Option D: 20000

 Option E: 60000
[A]:
Option A