Question

Jose needs 6.2 lb of organic blueberries to make smoothies. Organic blueberries are on sale for $2.85 per pound. Jose estimates that he will need $12 to buy the 6.2 lb of blueberries. What is Jose’s error?
Jose did not make an error. His estimate of $12 is correct.
Jose incorrectly rounded $2.85 down to $2. The estimate should be $18.
Jose incorrectly rounded 6.2 up to 7.
Jose incorrectly multiplied 2 and 7. The estimate should be $14.

Answer 1

Answer:

Step-Jose incorrectly rounded $2.85 down to $2. The estimate should be $18.

by-step explanation:

Answer 2

Answer:

Jose incorrectly rounded $2.85 down to $2. The estimate should be $18.

Step-by-step explanation:

When we round 6.2 lb to the nearest pound we round down, because the digit after point is less than 5 (2<5), so

$6.2\ lb\approx 6\ lb$

When we round $2.85 to the nearest dollar we round up, because the digit after point is greater than 5 (8>5), so

$\ 2.85\approx \ 3$

Now, 6.2 lb of blueberries will approximately cost

$\ 3\cdot 6=\ 18$

Hence, Jose incorrectly rounded $2.85 down to $2. The estimate should be $18.