Question

A tree increases annually by 1/8th of its height. What will be its height after 2 years, if it stands today 64 cm high?

A 72 cm Correct Answer Incorrect Answer
B 74 cm Correct Answer Incorrect Answer
C 81 cm Correct Answer Incorrect Answer
D 85 cm Correct Answer Incorrect Answer

Solution

Height of tree today = 64cm After 1 year it will increase by 1/8th of its height = (1/8) *64 = 8. So, total height after 1 year = 64 + 8 = 72cm. After 2nd year again increase of 1/8th of its height = (1/8) *72 = 9. So, total height after 2 years = 72 + 9 = 81cm

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