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@amitkr.m | |
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A TRAIN TRAVELS A DISTANCE OF 480KM AT A UNIFORM SPEED.IF THE SPEED HAD BEEN 8KM/H LESS,IT WOULD HAVE TAKEN 3HOURS MORE |
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@fanking | 4 March 11 |
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I dont understand, what do we have to do?
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@bestboy2 | 13 August 11 |
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Dist 1 =dist 2time=dist/spdav speed=x480/x=3-(480/x+8)480/x=1440-3x+8480=1440x-3x2+8x-3x2+1432x=480
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@jerx | 27 August 11 |
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3x-8y-24=0
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@jerx | 27 August 11 |
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D=S*T i. 480=S*T.480=ST ii.(S-8)*(T+3)=480 ST-8T+3S-24=480 from (i) ST=480 so on (ii) 480-8T+3S-24=480 -8T+3S=480-480+24 -8T+3S=24 3S-8T-24=0 |
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@frankm14 | 31 March 12 |
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1 1=0,prove it?
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@portiap | 11 October 12 |
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exatly whats the question here?im confused.
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