zahraf wrote:

A certain NYC taxi driver has decided to start charging a rate of r cents per person per mile. How much, in

dollars, would it cost 3 people to travel x miles if he decides to give them a 50% discount?

A. 3xr / 2

B.3x / 200r

C. 3r / 200x

D.3xr / 200

E. xr / 600

Charge for One person and One mile = r cents

i.e. Charge for 3 persons and One mile = 3*r cents

i.e. Charge for 3 persons and 'x' miles = 3*r*x cents

After Discount, Charge = 50% of (3*r*x) cents

i.e. Charged Amount = (1/2)*(3*r*x) cents

But 1 Dollar = 100 Cents

i.e. Charged Amount

in Dollar = (1/2)*(3*r*x)/100 Dollars

i.e. Charged Amount

in Dollar = (3*r*x)/200

DollarsAnswer: Option

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