Ken is working this summer as part of a crew on a farm. He earned $8 per hour for the first 10 hours he worked this week. Because of his performance, his crew leader raised his salary to $10 per hour for the rest of the week. Ken saves 90% of his earnings from each week. What is the least number of hours he must work the rest of the week to save at least $270 for the week?

MM

Mashaal Masha

Apr 12, 2024

Ken is working this summer as part of a crew on a farm. He earned $\$8$ per hour for the first 10 hours he worked this week. Because of his performance, his crew leader raised his salary to $\$10$ per hour for the rest of the week. Ken saves 90% of his earnings from each week. What is the least number of hours he must work the rest of the week to save at least $\$270$ for the week?

Difficulty: Hard

A:

38

B:

33

C:

22

D:

16

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ID: 6619748a5f7d3515958aa5f9