Find the Whole When Given the Percent

35% of what number is 91?

125% of what number is 45?

700% of what number is 1540?

56% of what number is 14?

70% of what number is 112?

35% of what number is 28?

150% of what number is 12?

40% of what number is 80?

300% of what number is 90?

200% of what number is 40?