# A Tree Grows at the Rate of 1/5th of Its Height Annually. by How Much Height Will It Grow After 2 Years, If Its Present Height is 75 Cms? - Mathematics

#### Question

MCQ

A tree grows at the rate of 1/5th of its height annually. By how much height will it grow after 2 years, if its present height is 75 cms?

• 108 cms

• 90 cms

• 144 cms

• 112 cms

#### Solution

108 cms

Explanation:

Rate of grow = 100/5 = 20 %

time t = 2 years

Height of the tree after 2 years

= 75 xx (1 + 20/100)^2

= 75 × 1.44 = 108 cm

Concept: Miscellaneous (Entrance Exam)
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