Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 3/9 of 4/20?"
39 × 420 is 115.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/9×4/20 3/9×8/20 3/18×4/20 3/9×4/40 3/9×12/20 3/27×4/20 3/9×4/60 15/9×4/20 3/45×4/20 21/9×4/20 3/9×28/20 3/63×4/20
© everydaycalculation.com