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the owner of a taxi company decided to run all the taxi on CNG fuel instead of Petrol diesel . The taxi charge in city comprist of fixed charge to gether with the change for the distance covered for a journey of 12km the change paid Rs7 89and for the journey of 20km the charge paid Rs 145 (i) What will a person have to pay for traveling a distance of 30 km

Posted by Soumya Vashishtha 4 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Sia ? 4 years, 3 months ago

Let the fixed charge be Rs x and

The charges for per km be Rs y

Therefore

x + 12 y = 89 ......... eqn 1

And

x + 20 y = 145 ........eqn 2

1 - 2

x + 12 y - x - 20 y = 89 - 145

8 y = 56

y = 7

Therefore x + 20 (7) = 145

x + 140 = 145

x = 5

Now , for 30 km

x + 30 y = 5 + 30 * 7

= 5 + 210

= 215

1Thank You

ANSWER

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