A shopkeeper sold some sets of pencils and pens. Each set contained 6 pencils and 2 pens. If the shopkeeper sold a total of 112 pencils and pens, how many pens did he sell altogether?
+321 We know that there are 8 items in 1 set and he sold 112 items so... our equation is 112/8 = 14 and we know each set sold 2 pens so... 14*2 = 28 pens sold altogether.
