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Darina [25.2K]
3 years ago
15

How do u work out question 5?

Mathematics
1 answer:
allochka39001 [22]3 years ago
5 0
Cost of using  the  smaller tiles

Area = 210 * 90 = 18,900
Total number of tiles required  = 18,900 / 100 = 189
That is 5/7 * 189 =  135 white tiles and 54 coloured tlles

Cost = 135*3.99 + 54*4.99  =  £808.11


Larger Tiles:-
Total numbers of tiles = 18,900 / 225  = 84
= 5/7 * 84 =  60 white tiles and 24 coloured tiles

Cost = 60*8.99 + 24 * 9.99 = £779.16


So using the 15 cm square tiles would be cheaper.

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Please help, love you
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