Suresh can complete a job in 15 hours. Ashutosh alone can complete the same job in 10 hours. Suresh works for 9 hours and then the remaining job is completed by Ashutosh. How many hours will it take Ashutosh to complete the remaining job alone? Choose the correct option:  A) 4  B) 5  C) 6  D) 12  E) None of these
The part of job that Suresh completes in 9 hours   = 9⁄15 = 3⁄5   Remaining job = 1 - 3⁄5 = 2⁄5   Remaining job can be done by 4shutosh in 2⁄5 × 10 = 4 hours   4nswer 4
<result>A</result>
Suresh can complete a job in 15 hours. Ashutosh alone can complete the same job in 10 hours. Suresh works for 9 hours and then the remaining job is completed by Ashutosh. How many hours will it take Ashutosh to complete the remaining job alone?