One eating house bought 126 kg of venison and pork.
12 of the venison and
37 of the pork were sold. The amount of pork sold was 15 kg more than the amount of venison sold.
- How much pork did the eating house buy?
- How much venison did the eating house buy?
|
Venison |
Pork |
Total |
Before |
2x3 = 6 u |
7 u |
+ 35 |
126 |
Change |
- 1x3 = - 3 u |
- 3 u |
- 15 |
|
After |
1x3 = 3 u |
4 u |
+ 20 |
|
(a)
15 ÷ 3 x 7 = 35
15 ÷ 3 x 4 = 20
Total mass of venison and pork bought
= 6 u + 7 u + 35
= 13 u + 35
13 u + 35 = 126
13 u = 126 - 35
13 u = 91
1 u = 91 ÷ 13 = 7
Mass of pork bought
= 7 u + 35
= 7 x 7 + 35
= 49 + 35
= 84 kg
(b)
Mass of venison bought
= 6 u
= 6 x 7
= 42 kg
Answer(s): (a) 84 kg; (b) 42 kg