Amoney box contains only 10 cent and 20 cent coins. there are 34 coins with a total value of $5.40. how many coins of each

let 10 cent coins =x

20 cent coins = y

total number of coins = x+y =34

x=34-y(1)

value of coins = $5.40

10x+20y=540

10(34-y) +20y =540

340 - 10y +20y =540

10y=540-340

10y=200

y=20

x=34-y =34-20=14

10 cent coins =x=14 coins

20 cent coins = y = 20 coins

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you divide the cost ($15) by the quantity (6) to get your questions answer. the yo-yo costs $2.50. hope this : )!

step-by-step explanation: