Question

Harold bought 3 pounds of red apples and 4.2 pounds of green apples from blue star grocery, where both kinds of apples are $1.75 a pound. How much did Harold spent on apples?

Answer 1

Harold bought 7.2 pounds of apples total. The price per pound is $1.75. So 7.2×1.75=12.6
The total price Harold spent on apples was $12.60.

Answer 2

If both are $1.75 a pound, then just multiply:

3 x 1.75 = $5.25
4.2 x 1.75 = $7.35
5.25 + 7.35 = $12.60

Harold spent $12.60 on apples. (That is pretty expensive by the way.)