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A monkey climbs 30 feet at the beginning of each hour and rests for a while he slips back 20 feet before he again starts climbing at the beginning of the next hour. If he begins his ascent at 9am, then at what time will be first touch a flag at 120 feet from the ground.

A5 pm

B6pm

C7pm

D9pm

Answer:

B. 6pm

Read Explanation:

At 5pm monkey will climb 110 feet and slips 20 ft will reach 90 feet At 6 pm monkey will climb to 120 feet, after that his slips will not be counted.

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