Question

If x + y, y + z and z + x can complete a work in 12, 15 and 18 days respectively. Then find the number of days in which they will complete the same work together.

Answer 1

Answer:

take the LCM of

Step-by-step explanation:

take the LCM of 12,15,18 which is 180

total 180 units of work

x and y does 180/12=15 units

y and z does 180/15=12 units

similarly z and x does 180/18=10 units

total work in a day=15+12+10=37 units

total work in 180/37=4.86 days

x+y+y+z+z+x= 2 times x+y+z

2* 4.86

= 9.72 days