Question

Mr. Anderson’s apple pie recipe requires ⅜ pounds of apple for 1 apple pie. How many pounds of apples would Mr. Anderson need to make ⅘ of an apple pie?

Answer 1

3/10 lb

Explanation:

The amount needed for a fraction of a pie is that fraction times the amount needed for the whole pie:

(4/5) × (3/8 lb) = (4·3)/(5·8) lb = (3/5)(4/8) lb = 3/(5·2) lb

= 3/10 lb

Mr. Anderson would need 3/10 pounds of apples for 4/5 of an apple pie.