on saturday you earn half as much as you do on sunday but twice as much as you do on friday. during the 3 days you $70. how much did you earn each day

Answer 1

x = friday
2x = saturday
2(2x) = 4x = Sunday

1x+2x+4x = 7x

7x = 70
x = 10 friday
2x = 20 = saturday
4x = 40 = sunday

Answer 2

Assuming you earn a total of $70.
x = amt earned Sat
2x = amt earned Sun
1/2 x = amt earned Fri

x + 2x + 1/2 x = 70

Solve for x