Answer the following
1. A rare stamp is worth €2500 and depreciates by 8% p.a. Find the value of the stamp after one year.
2. A rare sculpture is worth €120 000 and appreciates by 8% p.a. Find the value of the sculpture after one year.
3. Find 15 km as a percentage of 120 km
4. Find 70% of 24 hrs.
5. Olive measures Salma’s height as 95 cm. Some time later she measures her height as 1.14m.
6. Work out the percentage increase in Salma’s height.
7. Indira’s swimming time decreases from 32 s to 24 s. Work out the percentage decrease in her time.
8. Erika’s toy ski chalet is valued at €450. Its value increases by 10% then decreases by 10%
the year after. What is the value of Erika’s toy after these two changes?
9. Luke’s salary changes from €75 000 p.a. to €100 000 p.a. Find the percentage increase in Luke’s salary.
10. Mari’s watch gains 3 minutes every hour. Find the percentage error in Mari’s watch at the end of one hour.
11. Increase $350 by 17.5%.
12. Decrease $350 by 17.5%.
3. Find 15 km as a percentage of 120 km
4. Find 70% of 24 hrs.
5. Olive measures Salma’s height as 95 cm. Some time later she measures her height as 1.14m.
6. Work out the percentage increase in Salma’s height.
7. Indira’s swimming time decreases from 32 s to 24 s. Work out the percentage decrease in her time.
8. Erika’s toy ski chalet is valued at €450. Its value increases by 10% then decreases by 10%
the year after. What is the value of Erika’s toy after these two changes?
9. Luke’s salary changes from €75 000 p.a. to €100 000 p.a. Find the percentage increase in Luke’s salary.
10. Mari’s watch gains 3 minutes every hour. Find the percentage error in Mari’s watch at the end of one hour.
11. Increase $350 by 17.5%.
12. Decrease $350 by 17.5%.
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