Rich picked 3 1/2 pints of strawberries and used 4/5 of them to make jam. How many pints of strawberries did he use for the jam?
1 answer
To calculate the pints of strawberries Rich used for jam, we need to multiply the amount of strawberries he picked by the fraction used to make jam: 3 1/2 pints * 4/5 = <<3 1/2*4/5=2.8>>2.8 pints. Answer: \boxed{2.8}.