Two numbers A and B are such that the sum of 5% of A and 4% of B is two-third of the sum of 6% of A and 8% of B. What is the ratio of A and B?
সমাধান
সঠিক উত্তর: Option D
5% of A + 4% of B=23(6% of A+8% of B).
=>(5/100)×A+(4/100)×B = 2/3((6/100)×A+(8/100)×B).
=>(1/20)×A+(1/25)×B=(1/25)×A+(4/75)×B.
=>(12−125)×A=(475−125)×B.
=>(1/100)×A=(1/75)×B.
=>A/B=100/75=4/3.
Hence, the required ratio = 4:3
