Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 10/15 of 12/21?"
1015 × 1221 is 821.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/15×12/21 10/15×24/21 10/30×12/21 10/15×12/42 30/15×12/21 10/15×36/21 10/45×12/21 10/15×12/63 50/15×12/21 10/15×60/21 10/75×12/21 70/15×12/21 10/15×84/21
© everydaycalculation.com