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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) |
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