Small guavas |
Medium guavas |
Large guavas |
$4 |
$6 |
$9 |
Eric had some guavas in 3 sizes. The number of medium guavas was four times the number of large guavas. The number of large guavas were five times the number of small guavas. He sold all the small and medium guavas. He received $180 from selling
15 of the large guavas.Eric had some guavas in 3 sizes.
He sold all the small and medium guavas. He received $180 from selling
15 of the large guavas.
- How many medium guavas did he have at first?
- How much more did he collect from selling the medium guavas than the small guavas?
Small guavas |
Medium guavas |
Large guavas |
|
4x5 |
1x5 |
1x1 |
|
5x1 |
1 u |
20 u |
5 u |
(a)
The number of large guavas is the repeated identity. Make the number of large guavas the same. LCM of 1 and 5 is 5.
|
Small guavas |
Medium guavas |
Large guavas |
Before |
1 u |
20 u |
5 u |
Change |
- 1 u |
- 20 u |
- 1 u |
After |
0 |
0 |
4 u |
Number of large guavas that Eric sold
=
15 x 5 u
= 1 u
|
Small guavas |
Medium guavas |
Large guavas |
Number |
1 u |
20 u |
1 u |
Value |
$4 |
$6 |
$9 |
Total value |
4 u |
120 u |
9 u |
Amount that Eric received from selling of
15 of the large guavas = 9 u
9 u = 180
1 u = 180 ÷ 9 = 20
Number of medium guavas at first
= 20 u
= 20 x 20
= 400
(b)
Amount that Eric collected more from selling the medium guavas than the small guavas
= 120 u - 4 u
= 116 u
= 116 x 20
= $2320
Answer(s): (a) 400; (b) $2320