One eatery bought 55 kg of beef and chicken.
13 of the beef and
34 of the chicken were sold. The amount of chicken sold was 12 kg more than the amount of beef sold.
- How much chicken did the eatery buy?
- How much beef did the eatery buy?
|
Beef |
Chicken |
Total |
Before |
3x3 = 9 u |
4 u |
+ 16 |
55 |
Change |
- 1x3 = - 3 u |
- 3 u |
- 12 |
|
After |
2x3 = 6 u |
1 u |
+ 4 |
|
(a)
12 ÷ 3 x 4 = 16
12 ÷ 3 x 1 = 4
Total mass of beef and chicken bought
= 9 u + 4 u + 16
= 13 u + 16
13 u + 16 = 55
13 u = 55 - 16
13 u = 39
1 u = 39 ÷ 13 = 3
Mass of chicken bought
= 4 u + 16
= 4 x 3 + 16
= 12 + 16
= 28 kg
(b)
Mass of beef bought
= 9 u
= 9 x 3
= 27 kg
Answer(s): (a) 28 kg; (b) 27 kg