One eating house bought 115 kg of venison and chicken.
12 of the venison and
25 of the chicken were sold. The amount of chicken sold was 10 kg more than the amount of venison sold.
- How much chicken did the eating house buy?
- How much venison did the eating house buy?
|
Venison |
Chicken |
Total |
Before |
2x2 = 4 u |
5 u |
+ 25 |
115 |
Change |
- 1x2 = - 2 u |
- 2 u |
- 10 |
|
After |
1x2 = 2 u |
3 u |
+ 15 |
|
(a)
10 ÷ 2 x 5 = 25
10 ÷ 2 x 3 = 15
Total mass of venison and chicken bought
= 4 u + 5 u + 25
= 9 u + 25
9 u + 25 = 115
9 u = 115 - 25
9 u = 90
1 u = 90 ÷ 9 = 10
Mass of chicken bought
= 5 u + 25
= 5 x 10 + 25
= 50 + 25
= 75 kg
(b)
Mass of venison bought
= 4 u
= 4 x 10
= 40 kg
Answer(s): (a) 75 kg; (b) 40 kg