To solve this problem, we need to find out how much of the job each person can complete in one hour and then add these amounts together to find out how much they can complete together in one hour.

1. X can complete the job in 12 hours, so in one hour X can complete 1/12 of the job.
2. Y can complete the job in 8 hours, so in one hour Y can complete 1/8 of the job.
3. Together in one hour, X and Y can complete 1/12 + 1/8 of the job. To add these fractions, we need to find a common denominator. The least common multiple of 12 and 8 is 24, so we convert the fractions to have this denominator: (1/12)*(2/2) + (1/8)*(3/3) = 2/24 + 3/24 = 5/24. So, together they can complete 5/24 of the job in one hour.
4. To find out how long it will take them to complete the job together, we divide the total job (1) by the amount they can do together in one hour (5/24): 1 / (5/24) = 24/5 = 4.8 hours.

So, the answer is not listed among the options. They can complete the job together in 4.8 hours.

Question

To solve this problem, we need to find out how much of the job each person can complete in one hour and then add these amounts together to find out how much they can complete together in one hour.

1. X can complete the job in 12 hours, so in one hour X can complete 1/12 of the job.
2. Y can complete the job in 8 hours, so in one hour Y can complete 1/8 of the job.
3. Together in one hour, X and Y can complete 1/12 + 1/8 of the job. To add these fractions, we need to find a common denominator. The least common multiple of 12 and 8 is 24, so we convert the fractions to have this denominator: (1/12)*(2/2) + (1/8)*(3/3) = 2/24 + 3/24 = 5/24. So, together they can complete 5/24 of the job in one hour.
4. To find out how long it will take them to complete the job together, we divide the total job (1) by the amount they can do together in one hour (5/24): 1 / (5/24) = 24/5 = 4.8 hours.

So, the answer is not listed among the options. They can complete the job together in 4.8 hours.

Knowee AI · Accepted Answer

To solve this problem, we need to find out how much of the job each person can complete in one hour and then add these amounts together to find out how much they can complete together in one hour.

1. X can complete the job in 12 hours, so in one hour X can complete 1/12 of the job.
2. Y can complete the job in 8 hours, so in one hour Y can complete 1/8 of the job.
3. Together in one hour, X and Y can complete 1/12 + 1/8 of the job. To add these fractions, we need to find a common denominator. The least common multiple of 12 and 8 is 24, so we convert the fractions to have this denominator: (1/12)*(2/2) + (1/8)*(3/3) = 2/24 + 3/24 = 5/24. So, together they can complete 5/24 of the job in one hour.
4. To find out how long it will take them to complete the job together, we divide the total job (1) by the amount they can do together in one hour (5/24): 1 / (5/24) = 24/5 = 4.8 hours.

So, the answer is not listed among the options. They can complete the job together in 4.8 hours.

If X can complete a job in 12 hours and Y can complete the same job in 8 hours, how long will it take them to complete the job working together? A) 3 hours B) 4 hours C) 6 hours D) 7.5 hours

Question

Solution

Similar Questions

Upgrade your grade with Knowee