Self Check Answers

1. Nothing can be 40 times less than another quantity. Correct: The men are paid 40 times as much as the women; the women are paid one-fortieth as much as the men (in salaries from their pro teams).
2. 160 cm (rounded)
3. 8.9 L/100 km
4. $50,000{\text{lb}/\text{ft}}^{\text{2}}$
5. $4.3\times {10}^6{\text{lb}/\text{ft}}^2$
6. $133{\text{lb}/\text{ft}}^{\text{2}}$
7. About one-fourth as long; the calculation assumes that a dolphin is a “scaled-down” whale.