Question

21 is 35% of what number?
A.21=0.35 x x;62.4
B.x=21x 0.3k;7.4
C.0.35=21x x;40.8
D.21=0.35 x x;60

Answer 1

60

Answer 2

35% x = 21
-> x = 21/ .35 = 60

Answer 3

ZachKetchup, you must be working with proportions in your class! Again, set it up so that 21 out of some number N is 35 percent. 21/N=35/100. Cross multiply to get 21*100=35*N. Solve for N to get (21*100)/35=N. So N=60 ; D.

Since it looks like the answers want you to represent the percentage as a decimal, you can change all of the 35/100 or that fraction to be .35 instead. That should give you the same result though. If we say 21/N=.35, then we can multiply by N to both sides, 21=.35*N. Then divide. 21/.35=N. That will still yield 60, and D.