Compound Interest Practice Test 2

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Question : 35 of 40

Marks: +1, -0

A tree was planted 2 years ago. Its present height is 550 cm. Find its height at the time of plantation if it grows at 25% p.a.

300 cm
352 cm
298 cm
226 cm
340 cm

Solution:

Present height = height 2 years ago

(1+r/100)^t

550=P(1+25/100)^2

550=P(5/4)^2

550×4/5×4/5=P

22 × 4 × 4 = P

P = 352 cm

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