Bob buys a car for £120 after it is reduced by 20% in the sale. What was the original price of the car?
£120 is the price of the car after it has been reduced by 20%. This means that £120 is equal to 80% of the original price.2 ways to work this out:1) £120 = 80 % £ ? =100%therefore: £? = (120 x 100)/8012000/80 = 1200/8= £150 (therefore the original price is £150)
2) £120 = 80% therefore: (/4) £30 = 20%100% (=20% x 5) --> must do the same to the other side of the equation:100% = (£30 x 5)
100% = £150
MP
Related Maths GCSE answers
All answers ▸Find the values of x that satisfy the quadratic equation: x^2 + 14x + 40 = 0
How many roots does the following equation have? 2x^2 + 4x +2 = 0
There are 892 litres of oil in Mr Aston’s oil tank. He uses 18.7 litres of oil each day. Estimate the number of days it will take him to use all the oil in the tank.
The perimeter of a right-angled triangle is 81 cm. The lengths of its sides are in the ratio 2 : 3 : 4. Work out the area of the triangle.