Question

hi friends solve it plz​

Answer 1

Answer:Student8116

Step-by-step explanation:

Answer 2

Answer:

x = 80 and y = 60

Step-by-step explanation:

60/x + 240/y =4

100/x + 200/y = 25/6

let 1/x = a and 1/y = b

60a + 240b = 4 --------(1)

100a + 200b = 25/6 -------(2)

on multiply by 100 in eq 1 and 60 in eq 2

100(60a + 240b = 4)

60(100a + 200b = 25/6

6000a + 24000b = 400 ------(3)

6000a + 12000b = 250 ------(4)

subtract eq 3 and 4

6000a + 24000b = 400

6000a + 12000b = 250

- - -

12000b = 150

b = 150/12000

b = 1/80

put b in eq 1

60a + 240b = 4

60a + 240(1/80) = 4

60a + 3 = 4

60a = 4 -3

a = 1/60

1/x = a. and 1/y = b

1/x = 1/80 and 1/y = 1/60

x = 80 and y = 60