Search our library of Maths questions

Top answers

Maths

All levels

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...

Answered by Rohan K. • Maths tutor

4421 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 t...

Answered by Brenda L. • Maths tutor

4013 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, lea...

Answered by Brenda L. • Maths tutor

7088 Views

How do you apply the multiplication law of indices?

Use the following method :Xⁿx X^m=X^n+mexplained using worked solution:what is X³ x X⁴=Firstly write X³ and X⁴ individually X

Answered by Adeel I. • Maths tutor

2405 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 e...

Answered by Joshua R. • Maths tutor

6942 Views