Question

please solve this full question please​

Answer 1

Answer:

20.1 (a) 10 years

20.2 (c) 30 years

20.3 (b) 20 years

20.4 (d) 4 years

Step-by-step explanation:

Reena present age x

Mother present age y

y = x + 20...A

After 10 years,

y+10 = 2(x + 10)

y + 10 = 2x +20

y = 2x + 10...B

Solving A and B,

x = 10

y = x + 20 = 30

x+10 = 20

y+10 = 40