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 1988, the price of commodity X was 4.20 and that of Y was 6.30, in which year will commodity X cost 40 paise more than commodity Y? Select the correct option
A) 1997 B) 1998 C) 1999 D) 2000 E) None of these
Suppose in ‘n’ years the price of comodity X will be more by 40 paise than that of commodity Y.   ∴ 420 + 40n – 630 – 15n = 40   or, 25n – 210 = 40   or, 25n = 250   or, n = 250⁄25 = 10 years.   Answer 1998
<result>B</result>
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 1988, the price of commodity X was 4.20 and that of Y was 6.30, in which year will commodity X cost 40 paise more than commodity Y?