The amount of time that three people worked on a certain project was in the ratio of 2 : 3 : 5. If the project took 110

Given that => Project took 110 hours
The ratio of work for the 3 people = 2 : 3 : 5
Let 3 people = x, y, z
The ratio of x : y : z = 2 : 3 : 5
Sum of ratio = 2 + 3 + 5 = 10

x worked for => 110 * 2/10 hours
= 22 hours
y worked for => 110 * 3/10 hours
= 33 hours
z worked for 110 * 5/10 hours
= 55 hours

x worked for the shortest time
z worked for the longest time
The difference between their working hours
=> z - x hour
= 55 - 22 = 33 hours

Answer = B