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each month Rohan spends all his income on rent, travel and other living expenses. 1/3 of his income is used for rent, 1/5 on travel and £420 on other living expenses ... work out his income each month

1/3 + 1/5 = 8/15 (amount spent on rent and travel) 1 - 8/15 = 7/15 (amount spent on living expenses) 420 ÷ 7/15 = 899.999... = £900
RK
Answered by Rohan K. • Maths tutor
5200 Views

Solve the simultaneous equations, 3x + y = 10 and x + y = 4.

Firstly we want to get both equations in terms of one variable.3x + y = 10y = 10 - 3 x + y = 4y = 4 - x Make these two equations equal10 - 3x = 4 - x Rearrange the numbers to one side and the x's to one side...
BL
Answered by Brenda L. • Maths tutor
4845 Views

Tom bought a full bag of coal. After one week the bag was 2/3 full. During the next week he used 1/4 of the remaining coal. How much is left?

This question is going to involve multiplying fractions. The question tells us that in the first week 1/3 of the coal was used, and 2/3 was left.Then in the second week the used 1/4 of the remainders, leavin...
BL
Answered by Brenda L. • Maths tutor
8007 Views

How do you apply the multiplication law of indices?

Use the following method :X n x X m =X n+m explained using worked solution:what is X 3 x X 4 =Firstly write X 3 and X 4 individually X 3 = X x X x X X 4 = X x X x X x X X 3 x X 4 = X x X x X x X x X x X x XT...
AI
Answered by Adeel I. • Maths tutor
2904 Views

How would I make S the subject of the formula in the equation V^2 = U^2 + 2AS

So the best way to solve subject of the formula questions is to try and separate the term you want to make the subject , in our case S , from the rest of the terms in the equation. In order to start we have ...
JR
Answered by Joshua R. • Maths tutor
8826 Views