in a shop cost of 3 burgers 7 milkshake and french fries is rs. 120. in the same shop cost of 4 burgers 10 milkshake and french fries is rs. 164.5. find the cost of 1 burger 1 milkshake and french fries in the shop.
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3B + 7S + 1C = 120
4B + 10S + 1C = 164.50
Subtracting 1 from 2
B + 3S = 44.50
Now MULTIPLY ABOVE by 2
2B + 6S = 89
First equation can be written as:
B + 2B+6S + S + C = 120
OR
B + S + C + 89 = 120
B + S + C = 31
4B + 10S + 1C = 164.50
Subtracting 1 from 2
B + 3S = 44.50
Now MULTIPLY ABOVE by 2
2B + 6S = 89
First equation can be written as:
B + 2B+6S + S + C = 120
OR
B + S + C + 89 = 120
B + S + C = 31
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