Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 15/30 of 12/21?"
1530 × 1221 is 27.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 15/30×24/21 15/60×12/21 15/30×12/42 45/30×12/21 15/30×36/21 15/90×12/21 15/30×12/63 75/30×12/21 15/30×60/21 15/30×84/21
© everydaycalculation.com