IV. Answer the following:- 1. The present age of Reema is x years. (a) What will be her age after 5 years ? (b) How old was she 3 years back? (c) Her father's age is 7 years more than 3 times her age. What is her father's age? (d) Her grandfather is twice the age of her father. What is the age of her grandfather? (e) Her grandmother is 5 years younger than her grandfather. What is the age of her grandmother?​