Question

a butcher bought 500kg of meat at sh300 per kg.He sold the meat at a profit of 20% how much did he receive from the sales of meat​

Answer 1

x = 3.84 USD

y = 4.24 USD

Explanation:

0.5 x + 3/4 y = 5.1; x + 1/4 y = 4.9

0.5·x + 3/4·y = 5.1

x + 1/4·y = 4.9

2x+3y = 20.4

4x+y = 19.6

Pivot: Row 1 ↔ Row 2

4x+y = 19.6

2x+3y = 20.4

Row 2 - 2/

4

· Row 1 → Row 2

4x+y = 19.6

2.5y = 10.6

y = 10.6/

2.5

= 4.24

x = 19.6-y/

4

= 19.6-4.24/

4

= 3.84

x = 96/

25

= 3.84

y = 106/

25

= 4.24