4 houses -the man is already taxed 100 for the first house.
we are trying to find 4 houses,as we already know the first house we have 3 left.so you do 110 times 3 to find the three houses and add the amount taxed of the first house=to work out 4 houses.
simple:first house tax already given now work out remaing 4(mentions addition each house is taxed 110 so multiply by 3 and add it together with the first house)
They should buy 18 packages because 105 ÷ 6 is 17 with 3 left over. They should get another box because there is 3 left over vases that they wouldnt use
the amount of water that was left is 16500, so substract it to the added amount of water which is 12700, then add 10300 which is the amount of water that the village consumed. 16500-12700=3800+10300=13830
