ethanjames9
contestada

Alison has $1.60 worth of nickels and dimes in her coin purse. She has 11 more nickels than dimes. How many of each coin does she have?

Respuesta :

musiclover10045

n=11+d

0.05n +0.10d = 1.60

0.05(11+d) + 0.10d = 1.60

0.55 + 0.05d + 0.10d = 1.60

0.55 +0.15d =1.60

0.15d = 1.05

d = 1.05/0.15 = 7 dimes

7 +11 = 18 nickels

7 dimes = 7 *0.10 = 0.70

18 nickels = 0.05*18 = 0.90

0.90 +0.70 = 1.60


wolfnight2122

I just took the test and nickles were 18, dimes were 7.