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Taxi company and its charges

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by bhumika.k.shah » Sat Feb 06, 2010 10:41 am
54. A taxi company charges f cents for the fi rst mile of the taxi ride and m cents for each additional mile. How
much does the company charge for a 10-mile taxi ride?

(1) The company charges $0.90 for a 2-mile ride.
(2) The company charges $1.20 for a 4-mile ride.

I know individually neither statement is sufficient.
But then how are they sufficient together ?
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Source: — Data Sufficiency |
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by ajith » Sat Feb 06, 2010 11:03 am
bhumika.k.shah wrote:54. A taxi company charges f cents for the fi rst mile of the taxi ride and m cents for each additional mile. How
much does the company charge for a 10-mile taxi ride?

(1) The company charges $0.90 for a 2-mile ride.
(2) The company charges $1.20 for a 4-mile ride.

I know individually neither statement is sufficient.
But then how are they sufficient together ?
for 10 mile ride taxi company will charge = f+9m
1.) f+m = 0.9 -(1) - insufficient
2) f+3m = 1.2 --(2) - insufficient

solving,
(2)-(1) =>
2m = 0.3; m =0.15;
f= 0.75

for 10 mile ride taxi company will charge = f+9m

Hence C
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by bhumika.k.shah » Sat Feb 06, 2010 11:10 am
Got it :)
ajith wrote:
bhumika.k.shah wrote:54. A taxi company charges f cents for the fi rst mile of the taxi ride and m cents for each additional mile. How
much does the company charge for a 10-mile taxi ride?

(1) The company charges $0.90 for a 2-mile ride.
(2) The company charges $1.20 for a 4-mile ride.

I know individually neither statement is sufficient.
But then how are they sufficient together ?
for 10 mile ride taxi company will charge = f+9m
1.) f+m = 0.9 -(1) - insufficient
2) f+3m = 1.2 --(2) - insufficient

solving,
(2)-(1) =>
2m = 0.3; m =0.15;
f= 0.75

for 10 mile ride taxi company will charge = f+9m

Hence C
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