Question

Question #4fce5

Answer 1

Please see a step process below;

Explanation:

Since extra 45calories are burnt for each additional minute of the exercise..

Therefore;

`a)` `x` minutes `= 45x` calories

`b)` According to the question;

`3500` calories is equivalent to `1` pound of fat..

Hence;

`45x` minutes calories `= 3500` calories

`45x = 3500`

Divide both sides by `45`

`(45x)/45 = 3500/45`

`(cancel45x)/cancel45 = 3500/45`

`x = 3500/45`

`x =77.78 "mins per day"`

I.e the exercise will burn `1` pound of fat per day after `77.78` mins of the exercise..

In `30days` for `1` pound of fat to be burnt, the exercise should be done for;

`77.78/30 "min"s = 2.59 "mins"`

Hence, it should be `2.59` mins each day in `30days`

Hope this helps!