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?
o jose did not make an error. his estimate of $12 is correct.
o jose incorrectly rounded $2.85 down to $2. the estimate should be $18.
o jose incorrectly rounded 6.2 up to 7.
o jose incorrectly multiplied 2 and 7. the estimate should be $14.

Explanation:

Step1: Round the price per - pound

Round $2.85$ to the nearest whole number. Since $2.85\approx3$ (rounding up as the decimal part $0.85 > 0.5$).

Step2: Round the weight

Round $6.2$ to the nearest whole number. Since $6.2\approx6$ (rounding down as the decimal part $0.2<0.5$).

Step3: Calculate the estimated cost

The estimated cost is the product of the rounded - price and the rounded - weight, so $3\times6 = 18$.

Answer:

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