A monkey start climbing up a tree 22 ft tall.Each hour it hops 3 ft and slips back 2 ft. How much time would it take the monkey to reach the top.  Select.
A) 15 hrs	B) 18 hrs	C) 20 hrs	D) 17 hrs	E) 16 hrs
if monkey hops 3ft and slips back 2ft in a hour, it means the monkey hops (3ft-2ft)= 1ft/hr.   similarly in 19hrs it wil be 19ft.   Bt since the height of the tree is 22ft, so if the monkey hops up the tree in the next hr i.e 20th hr then it reaches at the top of the tree.   hence it takes 20 hrs for monkey to reach at the top   ANSWER:20 hrs  (3  -2  )= 
<gadget id="calculator">  (3  -2  )</gadget>
<output>1</output>
1ft/hr.   similarly in 19hrs it wil be 19ft.   Bt since the height of the tree is 22ft, so if the monkey hops up the tree in the next hr i.e 20th hr then it reaches at the top of the tree.   hence it takes 20 hrs for monkey to reach at the top   ANSWER:20 hrs
<result>C</result>
A monkey start climbing up a tree 22 ft tall.Each hour it hops 3 ft and slips back 2 ft. How much time would it take the monkey to reach the top.