Question
A reporter gets Rs. 40 per km for taxi travel and Rs. 20
per km for auto travel. In one week, he travelled 120 km and claimed Rs. 3600. How many km did he travel by taxi?Solution
ATQ, Let taxi distance = x km Let auto distance = y km x + y = 120 ………………..(1) 40x + 20y = 3600 From (1), x = 120 – y So, 40(120 – y) + 20y = 3600 4800 – 40y + 20y = 3600 20y = 1200 y = 60 And, x = 120 – 60 = 60
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