Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 20/40 of 40/45?"
2040 × 4045 is 49.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/40×80/45 20/80×40/45 20/40×40/90 60/40×40/45
© everydaycalculation.com