If the price of X increases by 40 paise every year and that of Y by 15 paise per year, and in 2001 the price of X was ₹4.20 and the price of Y was ₹6.30, then in which year will the price of X be 40 paise more than Y?
A
2012
B
2013
C
2010
D
2011
Correct Option:
D
Explanation
In 2001, Y costs ₹2.10 more than X. Every year X gains ₹0.25 on Y because 40-15=25 paise. To go from ₹2.10 behind to ₹0.40 ahead requires ₹2.50 ÷ ₹0.25 = 10 years → 2011.
