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primary 5 | Maths
| Fractions
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Kindly help me solve this math question. Thank you
Date Posted: 5 years ago
Views: 295
A:
5h fill 1 tank
1h fill 1/5 tank
B:
6h fill 1 tank
1h fill 1/6 tank
C:
3h fill 1 tank
1h fill 1/3 tank
together, 3 taps fill
1/5 + 1/6 + 1/3 = 7/10
[ 1/5 + 1/6 + 1/3 = 1/5 + 1/6 + 2/6
= 1/5 + 3/6
= 1/5 + 1/2
= 2/10 + 5/10
= 7/10
]
...
5h fill 1 tank
1h fill 1/5 tank
B:
6h fill 1 tank
1h fill 1/6 tank
C:
3h fill 1 tank
1h fill 1/3 tank
together, 3 taps fill
1/5 + 1/6 + 1/3 = 7/10
[ 1/5 + 1/6 + 1/3 = 1/5 + 1/6 + 2/6
= 1/5 + 3/6
= 1/5 + 1/2
= 2/10 + 5/10
= 7/10
]
...
Thank you very much for helping resolved the math problems.
welcome
See 1 Answer
Tank A took 5h to fill tank. So in 1h it fills 1/6 of it.
Tank B took 5h to fill tank. So in 1h it fills 1/5 of it.
Tank C took 3h to fill tank. So in 1h it fills 1/3 of it.
So if all 3 were turned on at the same time,fraction of the tank that's filled in 1h
= 1/6 + 1/5 + 1/3
= 5/30 + 6/30 + 10/30
= 21/30
= 7/10
Tank B took 5h to fill tank. So in 1h it fills 1/5 of it.
Tank C took 3h to fill tank. So in 1h it fills 1/3 of it.
So if all 3 were turned on at the same time,fraction of the tank that's filled in 1h
= 1/6 + 1/5 + 1/3
= 5/30 + 6/30 + 10/30
= 21/30
= 7/10
Thank you very much for helping resolved the math problems
Thank you very much for helping resolved the math problems
Welcome. The way to add the fractions up is to change the denominator to the same one. Then simplify the final fraction. There's a typo, it should be Tap instead of Tank
Well noted with thanks
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