One eating house bought 204 kg of chicken and pork.
14 of the chicken and
38 of the pork were sold. The amount of pork sold was 9 kg more than the amount of chicken sold.
- How much pork did the eating house buy?
- How much chicken did the eating house buy?
|
Chicken |
Pork |
Total |
Before |
4x3 = 12 u |
8 u |
+ 24 |
204 |
Change |
- 1x3 = - 3 u |
- 3 u |
- 9 |
|
After |
3x3 = 9 u |
5 u |
+ 15 |
|
(a)
9 ÷ 3 x 8 = 24
9 ÷ 3 x 5 = 15
Total mass of chicken and pork bought
= 12 u + 8 u + 24
= 20 u + 24
20 u + 24 = 204
20 u = 204 - 24
20 u = 180
1 u = 180 ÷ 20 = 9
Mass of pork bought
= 8 u + 24
= 8 x 9 + 24
= 72 + 24
= 96 kg
(b)
Mass of chicken bought
= 12 u
= 12 x 9
= 108 kg
Answer(s): (a) 96 kg; (b) 108 kg