maths 3.docx - Tap Rate of filling cold hot drain 1 3 1 5 4 15 Rate of filling 1 1 4 53 4 4 3 5 15 15 14 It two minutes amount 1 the tank 2x 4 8 15 15(b

maths 3.docx - Tap Rate of filling cold hot drain 1 3 1 5 4...

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Tap cold hot drain Rate of filling 3 1 5 1 15 4 Rate of filling 14 4 15 4 3 5 15 4 5 1 3 1 It two minutes amount 1 the tank 15 8 15 4 2 x (b) Volume remaining = 15 7 15 8 1 Rate of filling = 15 8 5 1 3 1 Time = utes x min 8 7 8 15 15 7 8 15 15 7 Amount of water delivered by the cold water tap in utes min 8 7 2 3 34500 60 8 23 200 cm x x Let the volume be equal to x Water delivered by the cold water tap 34500 24 7 3 2 x x
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23 24 34500 34500 24 23 x x x =34500 X=36000cm 3 X=36 litres s cm x / 120 60 5 36000 (b)(i)029 o 1 o (ii) 5.2km 0.1 (iii)5.5km 0.1 (c)CD=5.2km+ DA=3km ADC=5.2+3=8.2
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Total time = hrs hrs 6 5 60 50 60 20 30 Speed = 8.2+ hr km / 84 . 9 5 6 Let the length of the train be equal x Distance covered =5+x Relative speed= 30-25km/hr = s m / 18 25 Time = 90 seconds m x x x 120 90 18 25 5 (b) time = hrs 08 . 0 60 / 60 48 4 Distance =5x0.08x1000 =400m (c) speed=30km/hr Distance= 60 45 30 x =22.5kh/hr Distance = km x 75 . 18 60 45 25 22.5-18.75=3.75 Time = 25 75 . 3 =0.15x60 =9minutes
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(b)(i) P(ONJ) = 3 2 10 3 5 1 x x = 25 1 75 3 150 6 or or (ii) P(ON 1 J 1 ) or P(O
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  • Fall '16
  • dr,david onyango
  • It, Harshad number, 4cm, 3 j, 3km, cold water tap

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