Question

x-25%x=4.2 2x+30%x=9.2 (1-60%)x=0.32

Answer 1

x(1 - 25%) = 4.2

75%x = 4.2

x = 4.2 ÷ 75%

x = 5.6

x(2 + 30%) = 9.2

2.3x = 9.2

x = 9.2 ÷ 2.3

x = 4

40%x = 0.32

x = 0.32 ÷ 40%

x = 0.8