A) 2880
B) 3456
C) 4356
D) 3200
Correct Answer: B
Solution :
(b) 20% increase per year \[\Rightarrow \] Increase for 3 years. \[=2000\times \frac{120}{100}\times \frac{120}{100}\times \frac{120}{100}=3456\] Tips: \[122=144;{{12}^{3}}=1728;\] this maybe committed to memory as it will help in this question as well as in other chapters.You need to login to perform this action.
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