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A mathematician works for t hours per day and solves p problems per hour, where t and p are positive integers and 1 < p < 20. One day, the mathematician drinks some coffee and discovers that he can now solve 3p+7 problems per hour. In fact, he only works for t-4 hours that day, but he still solves twice as many problems as he would in a normal day. How many problems does he solve the day he drinks coffee?

 Aug 5, 2020
edited by Luya123  Aug 5, 2020
edited by Luya123  Aug 5, 2020
edited by Luya123  Aug 5, 2020
edited by Luya123  Aug 5, 2020
 #1
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See answer #2 here:  https://web2.0calc.com/questions/the-powers-of-coffee-in-mathematicians#r2

 Aug 5, 2020
 #2
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Thanks!

 Aug 6, 2020
 #3
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Did you get it?

If so, nice!

Inspirational  Aug 6, 2020

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