Question

a rational number is such that when you multiply it by 5 / 2 and add 2 / 3 to the product you get some by 12 what is the number​

Answer 1

Step-by-step explanation:

let a rational no. be a/b

so according to question

a/ b × 5/2 + 2/3 = 12

5a/2b + 2/3 = 12

after taking l.c.m

15a + 4 b / 6b = 12

15a + 4b = 12 × 6b

15a + 4b = 72b

15a = 72b - 4b

15a = 68b

15a / b = 68

a / b = 68 / 15