Lee bought a total of 16 mochi balls and chocolate bars. Each mochi ball cost 40¢. Each chocolate bar cost 80¢. He paid a total of $9.60. How many chocolate bars did he buy?
Number of
mochi balls |
Amount paid
for the mochi balls |
Number of
chocolate bars |
Amount paid
for the mochi balls |
Total paid |
| 16 |
16 x 40
= 640¢ |
0 |
0 |
640¢ |
| 15 |
15 x 40
= 600¢ |
1 |
1 x 80
= 80¢ |
680¢ |
| 8 |
8 x 40
= 320¢ |
8 |
8 x 80
= 640¢ |
960¢ |
$1 = 100¢
$9.60 = 960¢
Amount paid if all were mochi balls
= 16 x 40
= 640¢
Big difference between the amount paid for the mochi balls and the chocolate bars
= 960 - 640
= 320¢
Small difference between the amount paid for the one mochi ball and one chocolate bar
= 80 - 40
= 40¢
Number of chocolate bars
= 320 ÷ 40
= 8
Answer(s): 8
