One food outlet bought 288 kg of chicken and beef.
15 of the chicken and
58 of the beef were sold. The amount of beef sold was 15 kg more than the amount of chicken sold.
- How much beef did the food outlet buy?
- How much chicken did the food outlet buy?
|
Chicken |
Beef |
Total |
Before |
5x5 = 25 u |
8 u |
+ 24 |
288 |
Change |
- 1x5 = - 5 u |
- 5 u |
- 15 |
|
After |
4x5 = 20 u |
3 u |
+ 9 |
|
(a)
15 ÷ 5 x 8 = 24
15 ÷ 5 x 3 = 9
Total mass of chicken and beef bought
= 25 u + 8 u + 24
= 33 u + 24
33 u + 24 = 288
33 u = 288 - 24
33 u = 264
1 u = 264 ÷ 33 = 8
Mass of beef bought
= 8 u + 24
= 8 x 8 + 24
= 64 + 24
= 88 kg
(b)
Mass of chicken bought
= 25 u
= 25 x 8
= 200 kg
Answer(s): (a) 88 kg; (b) 200 kg