Question

. The mass of each candy in a box is 5 g. The mass of the empty box is 20 g. Let T grams represent the total mass of the box and candies. Let n represent the number of candies, so that

 T = 5n + 20

Answer 1

$T=5n+20\\\text{Therefore making n the subject of the formula, we have that}\\ n=\frac{T-20}{5}$