Mayank, Mirza, Little and Jaspal bought a motorbike for $60. Mayank paid one-half of the sum of the amounts paid by the other boys. Mirza paid one-third of the sum of the amounts paid by the other boys. Little paid one-fourth of the sum of the amounts paid by the other boys. How much did Jaspal have to pay?

12 usd

12 usd.. reply if its correct?

Yes, it's 12 USD
Please can you explain how you got this answer?

See.. Suppose x rs contribution of mayank, y for mirza and z for little.
So x+y+z=60
Now conditions are provided like
X=y/2+z/2
Y=x/3+z/3
Z=x/4+z/4

Now solve these three equation to get a relation in x, y and z
Put these relation in first equation to get the value.

Thankyou so much, Shubham

m + mi + l + j = 60

m = 1/2(mi + l + j) mi = 1/3(m + j + l) l = 1/4 (m + mi + j)

3m=60 => m = 20 4mi =60 => mi =15 5l = 60 => l= 12

Jaspal's contribution = 60 - (20 +15 + 12) = 13$

Answer will be $13 and not $12.