Work rate problem. Gaz, Bert and Bob: "When Florencia went out into the garden, ..."
Hi everyone.
Here is my problem:
When Florencia went out into the garden, she was surprised to find the men had finished the job. "That was quick work," she said. "54 minutes for the lot!" "Well, we just kept going and it was the same for all three of us," old Gaz replied. "Bob is two-thirds as fast as Bert, and young Bert's half as fast as I am. But I've had more experience." How long would Gaz have taken to do the whole job alone?
I worked out the answer to be 108 minutes. But apparently the correct answer is 99 minutes.
Can someone please tell me how to work this out correctly?
Thanks,
Steve.
Hi everyone.
Here is my problem:
When Florencia went out into the garden, she was surprised to find the men had finished the job. "That was quick work," she said. "54 minutes for the lot!" "Well, we just kept going and it was the same for all three of us," old Gaz replied. "Bob is two-thirds as fast as Bert, and young Bert's half as fast as I am. But I've had more experience." How long would Gaz have taken to do the whole job alone?
I worked out the answer to be 108 minutes. But apparently the correct answer is 99 minutes.
Can someone please tell me how to work this out correctly?
Thanks,
Steve.