Three truck drivers, Amar, Akbar and Anthony stop at a road side eating joint. Amar orders 10 rotis, 4 plates of tadka, and a cup of tea. Akbar orders 7 rotis, 3 plates of tadka, and a cup of tea. Amar pays Rs. 80 for the meal and Akbar pays Rs. 60. Meanwhile, Anthony orders 5 rotis, 5 plates of tadka and 5 cups of tea. How much (in Rs.) will Anthony pay?
Explanation:
Let cost of a Roti, a plate of Tadka and a cup of tea be Rs. a, b and c respectively.
Hence, we have,
10a + 4b + c = 80, and … (I) 7a + 3b + c = 60 … (II)
Now, by II – I,
3a + b = 20 … (III)
Hence, by, (I) – 3(III), we have,
a + b + c = 20
Hence, 5a + 5b + 5c = 100
Hence, Anthony will pay Rs. 100.
Hence, option (d).
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