Question

aiwan weighs 240 lb. he goes on a diet and loses 20 % of his body weight.

how much weight, in ounces, did he lose?

hint: 1 lb = 16 oz

a 728 oz

b 748 oz

c 768 oz

d 788 oz

Explanation:

Calculate weight lost in pounds

Using the Percentage Calculation knowledge point

$$ \text{Weight lost} = 240 \text{ lb} \times 20\% = 240 \times 0.20 = 48 \text{ lb} $$

Convert weight lost to ounces

Using the Unit Conversion knowledge point

$$ \text{Weight lost in ounces} = 48 \text{ lb} \times 16 \text{ oz/lb} = 768 \text{ oz} $$

Answer:

• (A) 728 oz
• (B) 748 oz
• (C) 768 oz (Correct answer)
• (D) 788 oz