Math6 Percent Proportions Part 2

In a video store, a DVD that sells for $15 is marked 10% off. What is the amount of discount?

A phone originally costs ₱10 000. If it is on sale with 30% off, how much is the discount price?

Amelia sells jewelry.  She makes a total of 12% of commission off of her sales.  How much commission does Amelia make when she sells $22 540 worth of jewelry?

Mrs. Rashleger has 35 students in her science class. If her class increases to 42 students next year, what will be the percent of change?

Last week, you finished a race in the Forza Horizon video game in 88 seconds. Today, you finished the same race in 77 seconds. What is your percent of change?

What is the commission made on a sale worth ₱2 250 with an 8% commission rate?

A real state company gives a 2% commission to its real state agents. Susan sold a condominium unit worth ₱5 000 000. How much is the agent's commission?

Matthew deposited ₱100 000 in a bank that earns a 2% interest rate yearly. If he withdraws his deposit after 5 years, how much did it earn?

Luke invested his money in the stock market worth ₱500 000 which earns about 5% yearly. How much will be the interest after 10 years?

Emily’s parents put $1500 in her bank account for college tuition at a simple interest rate of 8.25%. What will be the interest after 18 years?