One eating house bought 154 kg of pork and venison.
13 of the pork and
47 of the venison were sold. The amount of venison sold was 12 kg more than the amount of pork sold.
- How much venison did the eating house buy?
- How much pork did the eating house buy?
|
Pork |
Venison |
Total |
Before |
3x4 = 12 u |
7 u |
+ 21 |
154 |
Change |
- 1x4 = - 4 u |
- 4 u |
- 12 |
|
After |
2x4 = 8 u |
3 u |
+ 9 |
|
(a)
12 ÷ 4 x 7 = 21
12 ÷ 4 x 3 = 9
Total mass of pork and venison bought
= 12 u + 7 u + 21
= 19 u + 21
19 u + 21 = 154
19 u = 154 - 21
19 u = 133
1 u = 133 ÷ 19 = 7
Mass of venison bought
= 7 u + 21
= 7 x 7 + 21
= 49 + 21
= 70 kg
(b)
Mass of pork bought
= 12 u
= 12 x 7
= 84 kg
Answer(s): (a) 70 kg; (b) 84 kg