Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 21/40 of 10/30?"
2140 × 1030 is 740.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/40×10/30 21/40×20/30 21/80×10/30 21/40×10/60 63/40×10/30 21/40×10/90 21/40×50/30 21/40×70/30
© everydaycalculation.com