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Q.

If it costs Rs.10 a kilometre to fly and Rs.2 kilometre to drive. If one travels 200km covering map of the distance by flying and the rest by driving, then the cost of trip is


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a

Rs.2,000

b

Rs.24,000

c

Rs.Question Image

d

Rs.Question Image 

answer is C.

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Detailed Solution

Concept- Select variables to represent the unknown. Write the equation for the given problem in terms of the assumed unknown, and solve the equation to find the value.
Let the distance travelled by flying be x km, and the distance travelled by flying according to the question is 200km.
Therefore, the distance travelled by driving is Question Image.
Then, the coast of the trip is calculated by adding the cost of flying and driving.
Thus, Cost of trip is Question ImageQuestion ImageQuestion ImageHence, the correct answer is option 3) Rs.Question Image.
 
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