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Mathematics 15 Online
OpenStudy (anonymous):

. It takes 20 hours for a man to complete a journey by a car. If he drives the first half at the speed 60 kmh" 1 and the second half at 40 kmh', what is the total distance?

OpenStudy (shane_b):

Question states that it takes 20 hours to complete the journey. Half of that time (10 hours) he is traveling at 60 kmh and the other half (10 hours) he is traveling at 40kmh. All you need to do is sum up how far he went in each leg:\[distance_{total}=\frac{60km}{1h}(10h)+\frac{40km}{1h}(10h)=? \space km\]

OpenStudy (anonymous):

therefore the answer is 1000kms

OpenStudy (shane_b):

just "km" but yes.

OpenStudy (anonymous):

hey i have a question for you

OpenStudy (shane_b):

ok

OpenStudy (anonymous):

no the answer is 960 .

OpenStudy (anonymous):

d = s x t d = 60 x 10 = 600 d = s x t d = 40 x 10 = 400 total 1000 km (I think)

OpenStudy (shane_b):

@pooja195: How did you get 960?

pooja195 (pooja195):

my stupid mistakes

OpenStudy (shane_b):

ok :)

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