Increase £190 by 25%

There are two ways to work out the answer to this question. The first way involves first working out 25% of £190 and then adding this to your original £190. To calculate 25% of £190 we multiply 190 by 0.25 as 25%=25/100=0.25. This gives us £47.50. Then we add this value to our original £190 to get a final answer of £237.50. The other way to solve this question is slightly quicker. Rather than using two steps we can multiply our original £190 by 1.25. This again gives us £237.50. This is because by multiplying by 1.25 we are technically including the original £190 in our calculation. We can see this is correct by focusing a bit more on the first calculation. In this we did 0.25190+1190. By factorsing we get 190*(0.25+1)=190*(1.25) which is exactly what we did in this second method.

JF

Related Maths GCSE answers

All answers ▸

When given an equation with both letters and numbers on each side of the equals sign, for instance 4x +3 = 5x - 3, how do you know what to do first?


A cuboid has length x cm. The width of the cuboid is 4 cm less than its length. The height of the cuboid is half of its length. The surface area of the cuboid is 90 cm^2 . Show that 2x^2 − 6x − 45 = 0


Solve the simultaneous equations; 5x + 2y = 11, 4x – 3y = 18


Express 56 as the product of its prime factors