Question

3.) John spends $81 on food during his vacation.

That is 45% of the money he brought with him.
How much money does John have left to
spend?

Answer 1

John has 99 dollars after spending on food

Explanation:

The total amount John brought with him during his vacation can be expressed as;

Total amount John has=Amount he spends on food+amount he has left after spending on food

where;

Total amount John has=x

Amount he spends on food=45% of x=(45/100)×x=0.45 x

Amount he has left after spending on food=(Total amount he has-amount he spends on food)

Amount he has left after spending on food=(x-0.45 x)=0.55 x

Equating the amount he spends on food to 0.45 x;

0.45 x=81

x=81/0.45

x=180

Amount he has left after spending on food=(x-0.45 x)=0.55 x

Replacing the value of x;

Amount he has left after spending on food=(0.55×180)=99

John has 99 dollars after spending on food