1.

The cost of pizza is `2(1)/(2)` times the cost of a burger. If the sum of cost of one burger a and one pizza is Rs. 105, then find the cost of the burger.

Answer» Correct Answer - ₹ 30
Let the cost of the burger be Rs.x
The cost of the pizza `=(2(1)/(2))(x)=(5)/(2)x`
Given that :
`(5x)/(2)+x=105rArr(5x+2x)/(2)=105`
`(7x)/(2)=105rArrx=(105xx2)/(7)`
`x=15xx2xrArrx=30`
`:.` The cost of the burger = Rs. 30


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