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Sam takes out a £720 loan. Sam will have to pay back the £720 plus an interest rate of 15%. He will have to pay this back in 12 equal monthly instalments. How much must Sam pay monthly?

First, you must find out the total amount to pay back, this amount will be £720 + 15% of £720. To find 15% of £720, we first calculate 720/100 to find 1% and the multiply by 15: 720/100 = 7.2 *15 = 108. Now ...
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Answered by Samuel N. • Maths tutor
4584 Views

Please explain the difference between compound and simple interest

First of all, let's start by defining the word 'interest'. Interest in mathematical terms generally means an amount of money that is accumulated over a period of time after an amount of money is invested or ...
HM
Answered by Henry M. • Maths tutor
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Solve for x in the following equation using the quadratic formula, completing the square and factoring method: 2x^2-x-1=0

x=-1/2 and x=1
RC
Answered by Ravinder C. • Maths tutor
3879 Views

Solve the equation 5(2c -3) = 19

Firstly I would try to learn about the students abilities and maybe do an easier linear equations (without brackets) to ensure they have a basic idea how to solve these types of equations. For this questions...
JG
Answered by Jasmine G. • Maths tutor
3992 Views

How do you factorise the following quadratic: x^2 - 5*x - 14?

An example of an application of factorising quadratics is to find the unknown in the equation, x. Factorising means writing the above equation in the form (x+a)(x+b)=0 Using FOIL (First, Outer, Inner, Last) ...
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Answered by Emma P. • Maths tutor
4251 Views