A bag contains 50 p, 25 p and 10 p coins in the ratio 5:9:4, amounting to Rs.206. Find the total number of coins in the bag.
A
40
B
180
C
360
D
720
Correct Option - D
Explaination
Let the number of 50p, 25p and 10p coins be 5x, 9x and 4x.
(5x*50)+(9x*25)+(4x*10) = 20600
250x+225x+40x=20600
515x=20600
x=40
Total number of coins
= 18x
= 720