Answered

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a and b share a the cost in a ratio of 3:2 the cost is £85, how much does a pay?

Sagot :

85/5 = 17
17x3 = 51
17x2 = 34
51:34
fruitbat00
A has to pay £51 (and B pays £34)
This is how you work it out: A:B
                                         3:2
3+2=5,  85/5 = 17 (this is what you would have to pay if your part of the ratio was 1)
therefore, to find what A pays, you times the part 1 by 3 (as the ratio is 3:2)
17 x 3 = 51
(likewise, 17x2= 34 which is what B has to pay)
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