Question

Then,
difference of cross product
xxT(y-1)
diff. of cross product
Father's age =
MULTIPLE CHOT
Harsha is 40 years old and Rith is 60 years old. How
many years ago was the ratio of their ages 3 : 5?
( 10 years
(b) 20 years
(c) 37 years
(d) 5 years
e) None of these​

Answer 1

Answer:

Hrasha age =40

Rithi age=60

let x years before their ratio was 3:5

so x year's ago

Harsha=40-x

Ruth= 60-x

therefore, 40-x÷60-x = 3÷5

200- 5x = 180-200

-5 x+3 x = 180-200

-2 x. = -20

x. = -20÷ (-2)

x= 10

hence, 10 year's before their age ratio was 3:5