Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 12/21 of 30/80?"
1221 × 3080 is 314.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/21×30/80 12/21×60/80 12/42×30/80 36/21×30/80 12/21×90/80 12/63×30/80 60/21×30/80 84/21×30/80
© everydaycalculation.com