Problem #4: Simone has placed 18 dimes in a row on a table. Always starting from the left, first she exchanges each third coin for a quarter; then she exchanges each second
coin for a nickel; and finally, she exchanges each ninth coin for a penny. In cents, how
much money does Simone have after the final exchange?

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One shot. if 60% of 10 is 6, then what is 70%? we know it would be seven (since 60% is mathematically 60/100, or 6/10, then 70% is 70/100, or 7/10) but we can check anyway using ratios: 6 : 60% = x : 70%*inverse multiplicationx * 60% = 6 * 70%*divide both sides by 60%x = (6 * 70%) / 60%x = 7and since he has made 6 shots already, he would need just one more to get 7 shots or 70%. if the explanation is too confusing, comment and i will try to