Question: Estimate a 15% tip on a dinner bill of $53.74 by first rounding the bill amount to the nearest ten…

Estimate a 15% tip on a dinner bill of $53.74 by first rounding the bill amount to the nearest ten dollars.

Estimated tip: $

Solution

Estimate a 15% tip on a dinner bill of $53.74 by first rounding the bill amount to the nearest ten dollars. First, round $53.74 to the nearest ten dollars. Since $53.74 is closer to $50 than to $60, round it to $50. Next, calculate 15% of the rounded amount ($50). Convert the percentage to a decimal: \[ 15\% = 0.15 \] Multiply the decimal by the rounded bill amount: \[ 0.15 \times 50 = 7.5 \] So, the estimated tip is $7.50.