Question

A Diamond ring which normal sells for 1,240 is on sale for 868. A ruby ring which normally sells $310 is on sale for $217

Answer 1

I'm not sure what you are asking, but the diamond ring would be 30% off and the ruby ring would be 30% off. 868 is 70% of 1240 and 217 is 70% of 310. This means that 30% has been discounted, which is the remaining of the 100%.