There are 60 new houses being built in a neighborhood. last month, 2/3 of them were sold. this month, 2/5 of the remaining houses were sold. how many houses are left to be sold?

Sold Last Month: 60 x = 40

Remaining from last month: 60 - 40 = 20

Sold This Month: 20 x = 8

Remaining from this month: 20 - 8 = 12

there are 12 houses left to be sold

6in...8in...and...10in

Two sides must use the pythagoras theorem to obtain the hypothenus

square root of 8 squared plus 6 squared so as to obtain a 10...hence making it a right angled triangle