Q.If it took eight men ten hours to build a wall, how long would it take four men to build it?
LOL!!!!!.....Guest.....that answer is even better than mine ....!!!!!!
This is known as a "see-saw" problem
8 * 10 = 4 * x
80 = 4x divide both sides by 4
20 = x = the number of hours it takes 4 men
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No need. The wall's already built.