Question

A and B are together 90 years old. Five years ago A was thrice as oldas B was. Hence, the ages of A and B five years back would be (x – 5)years and (85 – x) years respectively. give answer true or false​

Answer 1

Step-by-step explanation:

A+B=90

BY CONDITIONS A-5=3(B-5)

A-5=3B-15

AS A+B=90 A=90-B

90-B=3B-15

195=4B

B=48.75

AS A+B=90 A=90-48.75

A=41.25

HENCE PROVED