Question

40 is 77% of what number?

Answer 1

40 = 77%
x = 100%
Cross multiplication = 77x = 4000
x = 4000/77
x = 51.95 (2dp)

Answer 2

Answer is 51.9

Step by step

40 is (=) 77% (.77) of (multiply) what number (x)

So

40 = .77x

Divide both sides by .77 to solve for x

40/.77 = .77/.77 x

51.9 = x

Check your work, substitute 51.9 in for x

40 = .77 x 51.9

40 = 40

Problem solved