Study Room

Lessons

Goto

General Aptitude
28.1 Decimal Fraction - General Questions

Take Exam
Previous
17 / 30
Next

Q.

The price of commodity X increases by 40 paise every year, while the price of commodity Y increases by 15 paise every year. If in 2001, the price of commodity X was Rs. 4.20 and that of Y was Rs. 6.30, in which year commodity X will cost 40 paise more than the commodity Y ?

View Answer

Correct choice: B

Explanation:

Suppose commodity X will cost 40 paise more than Y after z years.

Then, (4.20 + 0.40z) - (6.30 + 0.15z) = 0.40

⇒ 0.25z = 0.40 + 2.10

⇒ z = 2.50 = 250 = 10.
0.25 25

∴X will cost 40 paise more than Y 10 years after 2001 i.e., 2011.

Previous
17 / 30
Next