One food outlet bought 245 kg of venison and chicken.
15 of the venison and
57 of the chicken were sold. The amount of chicken sold was 15 kg more than the amount of venison sold.
- How much chicken did the food outlet buy?
- How much venison did the food outlet buy?
|
Venison |
Chicken |
Total |
Before |
5x5 = 25 u |
7 u |
+ 21 |
245 |
Change |
- 1x5 = - 5 u |
- 5 u |
- 15 |
|
After |
4x5 = 20 u |
2 u |
+ 6 |
|
(a)
15 ÷ 5 x 7 = 21
15 ÷ 5 x 2 = 6
Total mass of venison and chicken bought
= 25 u + 7 u + 21
= 32 u + 21
32 u + 21 = 245
32 u = 245 - 21
32 u = 224
1 u = 224 ÷ 32 = 7
Mass of chicken bought
= 7 u + 21
= 7 x 7 + 21
= 49 + 21
= 70 kg
(b)
Mass of venison bought
= 25 u
= 25 x 7
= 175 kg
Answer(s): (a) 70 kg; (b) 175 kg