Question

1. A family eats at a restaurant. The bill is $42. They have a coupon that gives them 15% off

Answer 1

a.

Solution:

$42 - 42 \times 15\%$

$=42 - 42 \times \frac{15}{100}$

$=42 - 21 \times \frac{15}{50}$

$=42 - \frac{315}{50}$

$= 42 - 6 \: \frac{15}{50}$

$= 41 \: \frac{50}{50} - 6 \: \frac{15}{50}$

$= 35 \: \frac{35}{50}$

$= 35.70$

Answer:

The family did spend $35.70 on the meal after the coupon

b.

Solution:

$35.70 + 42 \times 20\%$

$= 35.70 + 42 \times 0.2$

$= 35.70 + 8.4$

$= 44.10$

Answer:

The family did spend $44.10 on the meal in total.

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