Albert bought a total of 17 lollipops and sweets. Each lollipop cost 40¢. Each sweet cost 60¢. He paid a total of $8.40. How many sweets did he buy?
Number of
lollipops |
Amount paid
for the lollipops |
Number of
sweets |
Amount paid
for the lollipops |
Total paid |
| 17 |
17 x 40
= 680¢ |
0 |
0 |
680¢ |
| 16 |
16 x 40
= 640¢ |
1 |
1 x 60
= 60¢ |
700¢ |
| 9 |
9 x 40
= 360¢ |
8 |
8 x 60
= 480¢ |
840¢ |
$1 = 100¢
$8.40 = 840¢
Amount paid if all were lollipops
= 17 x 40
= 680¢
Big difference between the amount paid for the lollipops and the sweets
= 840 - 680
= 160¢
Small difference between the amount paid for the one lollipop and one sweet
= 60 - 40
= 20¢
Number of sweets
= 160 ÷ 20
= 8
Answer(s): 8
