Price of 2 tables is equal to the price of 5 chairs. Arwin buys 4 tables and 4 chairs and paid 4396. Find the cost of 3 tables and 2 chairs.
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2 tables = 5 chairs
table-chair price ratio is 2.5:1
1 table and 1 chair cost 1099
this gets divided by 3.5 and you get the price for 1 chair, then you multiply with 2.5 and you get the price for 1 table
785 is the price for 1 table
314 is the price for 1 chair
you multiply 758 with 3 and multiply 314 with 2 and add it together
now you got the cost of that. 2902
I multiplied 758 with 3 not 785 with 3 thats why the end is wrong
the "correct" is easier for you to understand, atleast I hope that
Similar questions
a(table),b(chair)
2a = 5b(1a = 2.5b)
4a+4b = 4396 = 10b+4b = 4396 = 4396/14=314(cost of b)
3a+2b = 7.5b + 2b = 9.5b = 9.5 * 314 = 2983