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 joses 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.

Explanation:

Step1: Round the values for estimation

Round 6.2 lb to 6 lb (a reasonable down - rounding) and $2.85 per pound to $3 per pound (rounding up).

Step2: Calculate the estimated cost

The estimated cost is $6\times3 = 18$. Jose likely rounded $2.85$ down to $2$ instead of a more appropriate rounding to $3$.

Answer:

Jose incorrectly rounded $2.85$ down to $2$. The estimate should be $18$. So the correct option is: Jose incorrectly rounded $2.85$ down to $2$. The estimate should be $18$.