One coffee shop bought 60 kg of venison and mutton.
15 of the venison and
45 of the mutton were sold. The amount of mutton sold was 8 kg more than the amount of venison sold.
- How much mutton did the coffee shop buy?
- How much venison did the coffee shop buy?
|
Venison |
Mutton |
Total |
Before |
5x4 = 20 u |
5 u |
+ 10 |
60 |
Change |
- 1x4 = - 4 u |
- 4 u |
- 8 |
|
After |
4x4 = 16 u |
1 u |
+ 2 |
|
(a)
8 ÷ 4 x 5 = 10
8 ÷ 4 x 1 = 2
Total mass of venison and mutton bought
= 20 u + 5 u + 10
= 25 u + 10
25 u + 10 = 60
25 u = 60 - 10
25 u = 50
1 u = 50 ÷ 25 = 2
Mass of mutton bought
= 5 u + 10
= 5 x 2 + 10
= 10 + 10
= 20 kg
(b)
Mass of venison bought
= 20 u
= 20 x 2
= 40 kg
Answer(s): (a) 20 kg; (b) 40 kg