Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 5/7 of 20/40?"
57 × 2040 is 514.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/7×20/40 5/14×20/40 5/7×20/80 15/7×20/40 5/7×60/40 5/21×20/40 25/7×20/40 5/35×20/40 35/7×20/40 5/49×20/40
© everydaycalculation.com