SOLUTION: Here is my problem, A mad scientist develops a formula which can turn a light bulb into a camel. Working alone, it takes the scientist 4 hours to create one dose of formula. The ma

Question 309094: Here is my problem, A mad scientist develops a formula which can turn a light bulb into a camel. Working alone, it takes the scientist 4 hours to create one dose of formula. The mad scientist's slightly mad assistant Igor can make one dose in 12 hours. How long, working together, will it take the mad scientist and Igor to create one dose of formula. Answer the question by using a table and 5 step method.
I set the problem up like x/4+x/12=1 my answer was x=1/4. I don't think I have it set up correctly. Can you help me to set up the problem and I can finish working it out. Thanks a bunch!
Answer by nerdybill(7384) (Show Source): You can put this solution on YOUR website!
x/4+x/12=1
is the correct formula.
However, you did not solve for x correctly.
.
x/4+x/12=1
Multiplying both sides by 12:
3x+x=12
4x = 12
x = 3 hours
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