Question 1:
Rahman bought a house at RM180 000. The market price of the house increases by 15 % per year. After a year, Rahman sold his house at the price of RM 205 000.
Is the selling price higher compared to the market price? Show your working.
Solution:
Market price=115%×RM180 000=115100×RM180 000=RM207 000RM207 000>RM205 000The market price of the house is higher than the selling price of the house.
Question 2:
A company makes a profit of RM 50 000 in year 2016. The projection of profit increase is fixed at 20 % from the previous year.
Predict the company profit in year 2018.
Solution:
Profit in year 2017=RM50 000×120100=RM60 000Profit in year 2018=RM60 000×120100=RM72 000
Question 3:
Sharon wants to buy a new car with the price of RM 78 500. Her father gives her some money, which is 30 % of the car price. The deposit for the car is
15
of the price.
Would her father’s contribution be enough for her deposit? Give your reason with calculation.
Solution:
30% of the car price given by Sharon's father=30100× RM 78500=RM 23550Deposit of the car price needed=15× RM 78500=RM 15700RM 23550> RM 15700, therefore her father 's contribution isenough for the deposit.
Question 4:
The profit of Company P and Company Q in March are RM38 000 and RM48 000 respectively. In April, the profit of Company P has increased by 20%.
Given the profit for both companies are equal in April, find the percentages decrease in profit of Company Q.
Solution:
Profit of Company P in April=120100×38000=RM45600Drop in profit of Company Q=RM48000−RM45600=RM2400Percentage decrease in profit=240048000×100%=5%
Question 5:
A biscuit making company needs 200 tonnes of flour every month. Factory K supplies 80 tonnes, while the rest is supplied by Factory M. In a particular month, Factory K faces a problem which forces it to reduce its output by 15%.
Find the total percentage of the flour output of Factory M in order to accommodate the requirement of the biscuit making company.
Solution:
New flour supply from Factory K=85100×80=68 tonnesNew flour supply from Factory M=200−68=132 tonnesTotal percentage of flour output of Factory M=132120×100%=110%