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#1 2018-07-01 04:58:54
- Zeeshan 01
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- Registered: 2016-07-22
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Question
If Ali can finish a job in 5 hours and Hashim can finish the same job in 10 hours , how many minutes will it take both of them together to finish the job?
Malik
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#2 2018-07-01 05:01:51
- Zeeshan 01
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- Registered: 2016-07-22
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Re: Question
Question 2 : Successive discounts of 10% and 15% is equivalent to a single discount of
Options
A:24%
B:24.5%
C:23.5%
D:22%
E:25%
Malik
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#3 2018-07-01 06:00:34
- Bob
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Re: Question
Here again you can use x.
Let the amount of work to be done be x.
Then Ali works at x/5 work units per hour and Hashim at x/10. Add these to get their combined work rate and use the formula:
If the price is x then a discount of 10% means it will now cost 0.9x and then multiply by a further 0.85 to apply the second discount.
If this is kx then the discount is (x-kx)/x times 100%
Bob
Children are not defined by school ...........The Fonz
You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you! …………….Bob 
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#4 2018-07-01 17:02:47
- Zeeshan 01
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- Registered: 2016-07-22
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Re: Question
Then Ali works at x/5 work units per hour and Hashim at x/10. Add these to get their combined work rate and use the formula:
Bob
Adding this lead to (3*x)/10
Malik
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#5 2018-07-01 17:18:25
- Zeeshan 01
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- Registered: 2016-07-22
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Re: Question
combined rate of working = (3*x)/10 * 50
then answer is 15x
Malik
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#6 2018-07-01 17:20:11
- Zeeshan 01
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- Registered: 2016-07-22
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Re: Question
If the price is x then a discount of 10% means it will now cost 0.9x and then multiply by a further 0.85 to apply the second discount.
Bob
If the discount is 10% then how it costs 0.9x?
Malik
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#7 2018-07-01 18:38:37
- Bob
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Re: Question
If the discount is 10% then how it costs 0.9x?
If you take 10% off the price, you'll be left with 90% to pay.
3x/10 is correct. Then rearrange the formula I gave:
This answer will be in hours so you'll need to convert to minutes.
Bob
Children are not defined by school ...........The Fonz
You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you! …………….Bob
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