Grade 9 Financial Math

The population of a town increased 25% two years ago and then decreased by 25% last year. The population now is 4500 people. What was the population before the two changes?

• 1406.25

• 4218.75

• 4800

• 14400

If a shirt was marked up by 115% and the tax on it was 13.5%, what will the shirt sell for if it was bought for BD42?

• 54.82

• 102.49

• 17.21

• 91.52

A house of value $500 000 depreciates annually by 5%. What will the new value of the house be 3 years from now?

• $583175.39

• $428687.50

• $578812.50

• $431654.89

A laptop is selling at BD 309 but after a discount is sold for only BD 250. What was the discount rate?

• 0.809

• 80.91%

• 1.236

• 19.09%

Sarah invests BD 1.5 million in machinery for her company which depreciates at 8% per year. What is the percentage depreciation on the value of the machinery after 5 years?

• 34.09%

• 65.91%

• 8%

• 31.94%

An item costs $35 and is sold for $37.10. What was the tax rate charged by the government?

• 94%

• 5%

• 60%

• 6%

John bought a car for $20 000. He sold it for a 30% profit. From the money raised from his sale, he bought another, more expensive car, which he had to sell for a 30% loss. What was the selling price of his second car?

• $9 800

• $18 200

• $33 800

• $44 200

After a 12% increase the price of a house is $80 000. What was the price before the increase?

• $90 909.09

• $70 400

• $89600

• $71428.57

A mobile phone's price depreciates 5% every 3 months. If the phone is now worth BD 410, what will its price be 3.5 years from now?

• BD 811.77

• BD 199.95

• BD 389.50

• BD 342.62

A Math teacher found that the grades obtained by her students in the last test are very low. She decided to modify the grades by increasing each grade by 20% and adding 2 extra marks afterwards. If the highest grade in the class became 98 after modification, what was the highest grade before modification?

• 80

• 96

• 82

• 79