Cole bought a total of 22 chocolate bars and mochi balls. Each chocolate bar cost 40¢. Each mochi ball cost 50¢. He paid a total of $9.40. How many mochi balls did he buy?
Number of
chocolate bars |
Amount paid
for the chocolate bars |
Number of
mochi balls |
Amount paid
for the chocolate bars |
Total paid |
| 22 |
22 x 40
= 880¢ |
0 |
0 |
880¢ |
| 21 |
21 x 40
= 840¢ |
1 |
1 x 50
= 50¢ |
890¢ |
| 16 |
16 x 40
= 640¢ |
6 |
6 x 50
= 300¢ |
940¢ |
$1 = 100¢
$9.40 = 940¢
Amount paid if all were chocolate bars
= 22 x 40
= 880¢
Big difference between the amount paid for the chocolate bars and the mochi balls
= 940 - 880
= 60¢
Small difference between the amount paid for the one chocolate bar and one mochi ball
= 50 - 40
= 10¢
Number of mochi balls
= 60 ÷ 10
= 6
Answer(s): 6
