Question

Melissa exercises for 20 minutes every day. She decides to increase her daily exercise time by 5 minutes each week. However, according to her doctor’s orders, she can spend no more than 45 minutes a day exercising. For how many weeks can Melissa increase her exercise time this way?

Answer 1

She can increase her time for 5 weeks

Answer 2

Answer: 5

Explanation:

Given: Melissa exercises for 20 minutes every day.

She decides to increase her daily exercise time by 5 minutes each week.

Let x be the number of weeks can Melissa increase her exercise time this way.

Then according to the question, we have the inequality as :_

`20+5x\leq45\\\Rightarrow\ 5x\leq25\\\Rightarrow\ x\leq5`

Hence, the number of weeks can Melissa increase her exercise time this way = 5.