One eatery bought 215 kg of pork and chicken.
15 of the pork and
45 of the chicken were sold. The amount of chicken sold was 12 kg more than the amount of pork sold.
- How much chicken did the eatery buy?
- How much pork did the eatery buy?
| |
Pork |
Chicken |
Total |
Before |
5x4 =
20 u |
5 u |
+ 15 |
215 |
Change |
- 1x4 =
- 4 u |
- 4 u |
- 12 |
|
After |
4x4 =
16 u |
1 u |
+ 3 |
|
(a)
12 ÷ 4 x 5 = 15
12 ÷ 4 x 1 = 3
Total mass of pork and chicken bought
= 20 u + 5 u + 15
= 25 u + 15
25 u + 15 = 215
25 u = 215 - 15
25 u = 200
1 u = 200 ÷ 25 = 8
Mass of chicken bought
= 5 u + 15
= 5 x 8 + 15
= 40 + 15
= 55 kg
(b)
Mass of pork bought
= 20 u
= 20 x 8
= 160 kg
Answer(s): (a) 55 kg; (b) 160 kg
