One eating house bought 80 kg of pork and chicken.
13 of the pork and
35 of the chicken were sold. The amount of chicken sold was 6 kg more than the amount of pork sold.
- How much chicken did the eating house buy?
- How much pork did the eating house buy?
|
Pork |
Chicken |
Total |
Before |
3x3 = 9 u |
5 u |
+ 10 |
80 |
Change |
- 1x3 = - 3 u |
- 3 u |
- 6 |
|
After |
2x3 = 6 u |
2 u |
+ 4 |
|
(a)
6 ÷ 3 x 5 = 10
6 ÷ 3 x 2 = 4
Total mass of pork and chicken bought
= 9 u + 5 u + 10
= 14 u + 10
14 u + 10 = 80
14 u = 80 - 10
14 u = 70
1 u = 70 ÷ 14 = 5
Mass of chicken bought
= 5 u + 10
= 5 x 5 + 10
= 25 + 10
= 35 kg
(b)
Mass of pork bought
= 9 u
= 9 x 5
= 45 kg
Answer(s): (a) 35 kg; (b) 45 kg