45 is 15% of what number
15% of a number is 4515% × x = 45x = 45 ÷ 15%x = 45 ÷ 15/100x = 45 × 100/15x = 4500/15x = 300Check:15% × 300= 15/100 × 300= 15 × 3= 45 45 is 15% of 300.
45 = 15% of number45 = 15% × n15% = \(\frac{15}{100}\) = 0.1545 = 0.15n\(\frac{45}{0.15}\) = \(\frac{0.15n}{0.15}\)0.15 and 0.15 cancels out300 = n15% of 300 is 4545 is 155 of 300
