Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 12/84 of 20/40?"
1284 × 2040 is 114.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/84×20/40 12/84×20/80 36/84×20/40 12/84×60/40 60/84×20/40
© everydaycalculation.com