120 g strawberry jelly 3 sponge fingers
420 ml custard
180 g tinned fruit
Kevin is going to make a trifle for 3 people.
Work out how much of each ingredient he needs

no, because the sides are not congruent

for ex: the reciprocal of 3/4 is 4/3. it is the opposite.

reciprocal definition:

a mathematical expression or function so related to another that their product is one; the quantity obtained by dividing the number one by a given quantity.

goog may have it for you