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Arithmetic Reasoning - Verbal and Reasoning

Q1:

The taxi charges in a city comprise of a fixed charge, together with the charge of the distance covered. For a journey of 16 km, the charges paid are Rs. 156 and for a journey of 24 km, the charges paid are Rs. 204. What will a person have to pay for travelling a distance of 30 km?

A Rs. 236

B Rs. 240

C Rs. 248

D Rs. 252

ANS:B - Rs. 240

Explanation: Let the fixed charge be Rs. x and variable charge be Rs.y per km. Then, x + 16y = 156 ...(i) and x + 24y = 204 ...(ii) Solving (i) and (ii), we get: x = 60, y = 6. Therefore Cost of travelling 30 km = 60 + 30 y = Rs. (60 + 30 x 6) = Rs. 240.