Question

Liza and Marta mow lawns during the summer to earn money. Liza determined that she can earn between $6.00 and $6.25 per hour. Marta estimates that she earns between $7.50 and $8.00 per hour. About how much more money will Marta earn than Liza if they each work 22 hours?


$65.01 to $85.00


$45.01 to $65.00


$25.01 to $45.00


$5.00 to $25.00

Answer 1

Find the smallest and largest possible hourly difference, then multiply by 22.

- Smallest difference per hour = 7.50 − 6.25 = $1.25 → total = 1.25 × 22 = $27.50
- Largest difference per hour = 8.00 − 6.00 = $2.00 → total = 2.00 × 22 = $44.00

So Marta will earn about $27.50 to $44.00 more, which fits the range $25.01 to $45.00.