1.  A kiddy bank of a child contains all Rs. 1, 50 paise and 25 paise coins. What is the total amount in the bank ? 
(1) Total number of coins are 20 
(2) The number of 50 paise and 25 paise coins are in the ratio of 7:3.
A. only 1 is needed
B. only 2 is needed
C. Both 1 and 2 are needed
D. None

Answer: Option C

Explanation:

Given that 50 paise and 25 paise coins are in the ratio of 7:3, they can be either 7 & 3 or 14 & 6.

As total 20 coins also includes Rs. 1 coins, so 50 paise & 25 paise coins are 7 & 3 respectively & Rs. 1 coins are 10.

Total amount = (100x10) + (50x7) + (25x3) = 1425 paise or Rs.14.25.