One eating house bought 193 kg of pork and chicken.
14 of the pork and
45 of the chicken were sold. The amount of chicken sold was 20 kg more than the amount of pork sold.
- How much chicken did the eating house buy?
- How much pork did the eating house buy?
|
Pork |
Chicken |
Total |
Before |
4x4 = 16 u |
5 u |
+ 25 |
193 |
Change |
- 1x4 = - 4 u |
- 4 u |
- 20 |
|
After |
3x4 = 12 u |
1 u |
+ 5 |
|
(a)
20 ÷ 4 x 5 = 25
20 ÷ 4 x 1 = 5
Total mass of pork and chicken bought
= 16 u + 5 u + 25
= 21 u + 25
21 u + 25 = 193
21 u = 193 - 25
21 u = 168
1 u = 168 ÷ 21 = 8
Mass of chicken bought
= 5 u + 25
= 5 x 8 + 25
= 40 + 25
= 65 kg
(b)
Mass of pork bought
= 16 u
= 16 x 8
= 128 kg
Answer(s): (a) 65 kg; (b) 128 kg