Top answers

How would I solve y=3x, 2x+y=5 using the substitiution method?

y=3x (1) 2x+y = 5 (2) Here we are being asked to find what the value of x and y is. It is asking us to substitute either x or y into the equation to help us find our solution. Now substitue means remove some...
SJ
Answered by Samantha J. • Maths tutor
10216 Views

Jack can paint a house in 5 days, and Richard can paint the same house in 7 days. Working together, how long will it take them to finish the job?

In order to simplify the problem, I will solve it without using fractions. First, we should find the least common multiple(LCM) of the days needed for Jack and Richard to paint a house. Normally, we would us...
KT
Answered by Kristiyan T. • Maths tutor
4598 Views

The average age of a group of 6 people is 21. One more person joins the group and the average is now 25. How old is the new member of the group?

To work out averages we add up all of the ages and divide by the number of people in the group. So that means in the first group, before the new person joined in, all the ages added up and divided by 6 equal...
AK
Answered by Alok K. • Maths tutor
32623 Views

What is the next number in the sequence?

23 35 47 59 ?First we need to find the pattern in the sequence. We can do this by working out the gaps between the numbers. To work out the gap, we subtract each number from the next one in the sequence.35 -...
MC
Answered by Martin C. • Maths tutor
10509 Views

How much would Jodie earn?

Jodie works for a bookshop, she is paid £6.50 an hour plus 5% of the cost of each book she sells. On Saturday she worked for 3 hours and sold £220 worth of books. How much did she earn on saturday? Here we n...
RB
Answered by Rheanne B. • Maths tutor
5419 Views