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Assuming that profit of a shopkeeper in ...

Assuming that profit of a shopkeeper in a particular commodity is a linear expression of transportation charge (t) and the quantity of commodity (q).He earns a profit of ₹10000 by selling 20 units at the transport charge of ₹ 400.He also earns a profit of ₹ 12000 by selling 25 units at the transport charge of ₹ 600.What is the linear expression in t and q?

A

600q-5t

B

500q-4t

C

600q-4t

D

500q-5t

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