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What is the difference between simple and compound interest?

Simple interest means the amount of money increases by the same amount each year, compound interest means the amount of money increases by the same proportion each year. For example if you deposited £100 in ...
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Answered by James S. • Maths tutor
13810 Views

Sam needs to make a drink from orange cordial and lemonade in the ratio 1:9. How much orange cordial does he need to make 1500ml?

1 portion of orange cordial is mixed with 9 portions of lemonade There are 10 portions in total one-tenth of the total volume would be the volume of orange cordial needed (1/10) * 1500 = 150 Therefore 150ml ...
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Answered by Oluwatobi O. • Maths tutor
3730 Views

Solve this equation: 5x-4=3x+7

Step 1 Collect x terms on one side (here we subtract 3x from both sides to give 2x on the left, and 0x, on the right) Step 2 Collect the non x terms on theother side (here we add 4 to both sides to give 0 on...
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Answered by Callum M. • Maths tutor
4689 Views

What is the probability that the next baby born in England will be a boy?

A baby can either be a boy or a girl, so there are only two possible outcomes. This means that the probability of the next baby being born a boy is 1 out of the 2 outcomes. This also can be written as 0.5 as...
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Answered by Poppy S. • Maths tutor
4980 Views

Please factorise and solve x^2 -1 = 0

using the method, what two numbers multiply to create -1 and add to make 0 -1 must be 1 x -1 therefore answer is (x+1)(x-1) - is it clear how the single x value is cancelled out? x^2 +x -1 -x = x^2 -1
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Answered by Laxmi A. • Maths tutor
3462 Views