Try another version of this question Get help: Box 1: Enter your answer as a number (like 5, -3, 2.2172) or as a calculation (like 5/3, 2^3, 5+4)
Sam can mow a lawn in 30 minutes. Bullwinkle can mow the same lawn in 60 minutes. How long does it take for both Sam and Bullwinkle to mow the lawn if they are working together?
minutes
Enter DNE for Does Not Exist, oo for Infinity `20`