1.

A bag consista of Rs.1, Rs.2 and Rs, 6 conns. The sumber of Rs. 2 coins is equal to twice the number of Rs. 1 cons. The number of Rs. 5 is equal to thrice the number of Rs. 2 coins . If the total amount in the bad is Rs. 700, then find the total number of coins in the beg.A. 150B. 160C. 180D. 200

Answer» Correct Answer - C
Let x,y an the z be the number of Rs. 1. coins, Rs. 2 coins and Rs.5 coins, respectively .
Given, `y=2x`
`z=3y=3(2y)=6x`
`1(x)+2(y)+5(z)=Rs. 700`
`1x+2(2x)5(6x)=Rs. 700`
`x+4x+30x=Rs. 700`
`35x=Rs. 700`
`x=20`
`y=2xx20=40`
`x=6xx20=120`
The total number of coin `x+y+z`
`=20+40+120=180`
Hence, the correct option is (c)


Discussion

No Comment Found