Question

Helping others is not only good for them and a good thing to do, but it also makes us happier and healthier too. Giving also connects us to others, creating stronger communities and helping to build a happier society for everyone. And it's not all about money - we can also give our time, ideas and energy.

Answer 1

$5.25, $7.20, 21 dollars for 4 pizzas

Explanation:

21/4 = $5.25 per pizza

36/5= $7.20 per pizza

$5.25 is cheaper, thus 21 dollars for 4 pizzas is a better deal