Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 30/40 of 42/54?"
3040 × 4254 is 712.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/40×42/54 30/40×84/54 30/80×42/54 90/40×42/54
© everydaycalculation.com