Question

Can someone do the circled question 2nd bit 3rd one without trial and error method and with proper steps
Fastest and most accurate will be marked as brainliest

Answer 1

Answer:

Step-by-step explanation:

Let age of B be= x

Age of A= x+15

10 years ago

Age of B= x-10

Age of A= x+15-10

10 years ago

Age of A= 4(age of B)

x+15-10= 4(x-10)

x+5= 4x-40

x-4x= -40-5

-3x= -45

x= -45/-3

x= 15

Therefore present ages are:

A= x+15= 15+15= 30yrs

B= x= 15yrs