SOLUTION: A student must leave for campus in 10 minutes or he will be late for class.​ Unfortunately, he is snowed in. He can shovel the driveway in 1616 ​minutes, and his br

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Question 1013183: A student must leave for campus in 10 minutes or he will be late for class.​ Unfortunately, he is snowed in. He can shovel the driveway in
1616
​minutes, and his brother claims to be able to do it in
1212
minutes. If they shovel​ together, how long will it take to clear the​ driveway? Will this give enough time for the student to get to the​ campus?

Answer by fractalier(6550)   (Show Source): You can put this solution on YOUR website!
I'm thinking you mean 16 and 12 minutes...if so the set up looks like this...

Now multiply by 48 and solve for the time t...
4t + 3t = 48
7t = 48
t = 48/7 minutes
That means he can leave in almost 7 minutes...

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