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Amanda and Wim share some money in the ratio 2:5. Wim receives £115. Calculate how much money was shared?

First, you need to find value of one part . We can see that Wim who has a share of 5 parts gets £115. So, 5 parts is equivalent to £115. Therefore, value of each part is 115/5 = £23. Now, adding the ratios 2...
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Answered by Saeideh N. • Maths tutor
13345 Views

rearrange c=(4-d)/(d+3)

c = 4-d/d+3 x d+3 = c(d+3)= 4-d = cd +3c= 4- d = cd+d=4-3c. = d(c+1)=4-3c = d= 4-3c/c+1
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Answered by Verina Y. • Maths tutor
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There are 12 counters in a box, 5 red and 7 blue. 2 counters are taken out at random without replacement, what is the probability that they are the same colour?

We need to consider two possibilities, you could either pick out two blues or two reds. To find the total probability we work it out for each individually and then add them together. We can find the probabil...
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Answered by Christopher R. • Maths tutor
5854 Views

A car costs £1200 in a sale. It was reduced by 20%. What was the original price?

£1200 is 80% of the original price.We need to find what 100% of the original price is.if £1200 is 80% then to find 1% we can divide it by 80. 1200/80=15 £15 is 1% of the original price to find 100% we can mu...
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Answered by Luke F. • Maths tutor
6301 Views

y = p x q^(x - 1), When x = 1, y = 10, and when x = 6, y = 0.3125. Find the value of 'y' when x = 3

When x = 1, y = 10Therefore, p x q (1 - 1) = 10 p x q 0 = 10 p x 1 = 10, p = 10When x = 6, y = 0.3125 p x q (6 - 1) = 0.3125 10 x q 5 = 0.3125 q 5 = 0.03125, q = (0.03125) 1/5 , q = 0.5Let x = 3, 10 x 0.5 (3...
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Answered by Prahlad M. • Maths tutor
9627 Views