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A store is having a sale on sofas. One sofa was originally £400 but is reduced by 60% in the sale. What is the price of the sofa in the sale?

There are several ways to work out percentages. First however we have to determine 60% of 400 before we subtract it. So an easy way to do this is work out 10% of 400, which is 40 as we just divide 400 by 10,...
LJ
Answered by Luke J. • Maths tutor
3832 Views

An isosceles triangle has a base with length x+4 and the other two sides have length x+3. The perimeter of this isosceles triangle is 16cm. Find the area of the triangle.

First, we need to find the value of x. The perimeter of a shape is the sum of the length of all of its sides, so the perimeter of this isosceles is x + 4 + 2(x + 3) = x + 4 + 2x + 6 = 3x +10. We are told tha...
DM
Answered by Dominic M. • Maths tutor
4763 Views

A shop trying to sell a laptop reduces its price by 7% at the very end of each week, from an initial price of £600. If you have £365 to spend, how many weeks must you wait until you can buy the laptop?

This is a simple question, but it's important to not get confused when thinking about how the laptop's price gets reduced. We know the price starts at £600, and that it goes down by 7% each week. If somethin...
KS
Answered by Kiavash S. • Maths tutor
3540 Views

Solve the simultaneous equations: x+y=2 , 4y²-x²=11

These equations would best be solved using the substitution method, in this case the easiest way would be substituting x. For the first equation we need to rearrange it to get x on one side so we have x=2-y....
WP
Answered by Waris P. • Maths tutor
6626 Views

Equations

Ran through the 3 different types of GCSE equations
OM
Answered by Oscar M. • Maths tutor
3611 Views