One food outlet bought 133 kg of mutton and pork.
14 of the mutton and
27 of the pork were sold. The amount of pork sold was 8 kg more than the amount of mutton sold.
- How much pork did the food outlet buy?
- How much mutton did the food outlet buy?
|
Mutton |
Pork |
Total |
Before |
4x2 = 8 u |
7 u |
+ 28 |
133 |
Change |
- 1x2 = - 2 u |
- 2 u |
- 8 |
|
After |
3x2 = 6 u |
5 u |
+ 20 |
|
(a)
8 ÷ 2 x 7 = 28
8 ÷ 2 x 5 = 20
Total mass of mutton and pork bought
= 8 u + 7 u + 28
= 15 u + 28
15 u + 28 = 133
15 u = 133 - 28
15 u = 105
1 u = 105 ÷ 15 = 7
Mass of pork bought
= 7 u + 28
= 7 x 7 + 28
= 49 + 28
= 77 kg
(b)
Mass of mutton bought
= 8 u
= 8 x 7
= 56 kg
Answer(s): (a) 77 kg; (b) 56 kg