I have 60 coins, 30% are pennies, how many coins is not pennies

60 coins

30%=pennies

100-30=70% = not pennies

percent menas parts out of 100 so

70%=70/100=7/20=0.7

so we want to find 70% of 60

'of' can be translated to as multiply

0.7 times 60=42

42 coins=not pennies

60 x 30% = 18 so 60 - 18 = 42 so 42 coins are not pennies