10% of 40 p = 40 p *10/100 = 4 p
Chat with our AI personalities
Let x be the amount of money Amy had initially. If she spent 30% on a book, she spent 0.3x on the book. She saved 60%, which means she saved 0.6x. Since she had 20 pence left, we can set up the equation 0.1x = 20. Solving for x, we find that Amy had 200 pence initially.
Write it as a fraction and then multiply by 100 %: "What percent of 40 is 4?" becomes "4 out of 40 is what percent?" which is: 4/40 x 100 % = 1/10 x 100 % = 10 %
25 percent of 40 is 10 because 25% = 1/4 so asking 25% of 40 is just like taking 1/4 of 40, which is 10.
10% = $40
30 percent of 40 is 12 because you are just multiplying 3/10 by 40/1, which is 12.