Question

Joelle has 20w flower in her garden. The flowers double every year. A bug in her garden eats (w) flowers every month. Write an expression to show how many flowers will be left in her garden after 2 years .

Answer 1

At first, she has 20w flowers

After one year she will have 2*20w = 40w flowers

After two years he will have 2*40w = 80w flowers

A bug eats w flowers per month. In one year there are 12 months, then in two years, there are 2*12 = 24 months. Therefore, in two years, the bug eats 24w flowers.

Finally, 80w - 24w = 56w flowers will be left after 2 years