Question

two motor mechanics,ron and sam,working together can overhaul a scooter in 6 hours.ron alone can do the job in 15 hours.in how many hours can sam alone do it​

Answer 1

Step-by-step explanation:

Given two motor mechanics, ron and sam, working together can overhaul a scooter in 6 hours. ron alone can do the job in 15 hours.in how many hours can sam alone do it

• So number of hours Ron requires to do the job will be 15 hours
• So the number of scooters Ron can overhaul in one hour be r
• Now work done by both in one hour will be 1/15 + 1/r
•                        Simplifying we get  = 15 + r / 15 r  
• So equating we get  
•  So equation will be    15 + r / 15r = 1/6
•                                                    90 + 6r = 15 r
•                                                     90 = 15 r – 6r
•                                                           9r = 90
•                                                           r = 90 / 9
•                                                             Or r = 10

Therefore Ron can do the work in 10 hours

Reference link will be

https://brainly.in/question/7905477