A worker may claim Rs.15 for each km which he travels by taxi and Rs.5 for each km when he drives his own car. If in a week he claimed Rs. 500 for travelling 80 km, how many km did he travel by taxi?
A
10
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B
20
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C
30
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D
40
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Solution
The correct option is A10 Let the worker traveled x km by taxi. Thus, 15×x+(80−x)×5=500 10x+400=500 x=10 Thus, he traveled 10 km by taxi.