Question

5 burgers, 6 pizzas and 7 cokes costs ₹178. 6 burgers, 4 pizzas and 2 cokes costs ₹124. What is the cost of 1 burger 1 pizza and 1 coke​

Answer 1

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At a certain fast food restaurant, Amit can buy 3 burgers, 7 shakes and one order of fries for Rs. 120. At the same place, it would cost Rs. 164.50 for 4 burgers, 10 shakes and one order of fries. How much would it cost for an ordinary meal of one burger, one shake and one order of fries?

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Solution

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Correct option is A)

Let cost of burger = b, cost of shake = s

and cost of fries = f

Now, 3b+7s+f=120 ...(1)

And 4b+10s+f=164.50 ...(2)

Subtract the two equations we get

b+3s=44.5

∴b=44.5−3s ...(3)

Now, 3b+7s+f=120

or 2b+b+7s+f=120

2(44.5−3s)+b+7s+f=120 ....from (3)

89−6s+b+7s+f=120

∴b+s+f=31

Thus, cost of one burger, one shake and one fries is Rs. 31.

Step-by-step explanation:

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