Is 17 heartbeats in 15 seconds equal to 68 heartbeats in in 60 seconds

Yes, because if you divide 17 by 15, and 68 by 60, you get the same number, which is the unit rate. Hope this helps.

Yes it is equal because if you add 17 , 4 times to the heartbeat it equals 68 eventually

The first one, i believe, would be correct. all the others have one thing in common, and that's that they have repeating numbers. in the second one, x and y have repeating 6's and 3's, and in the third, x and y have repeating 6's as well. in the last one, there are repeating 3's. the first one has no repeating numbers.

If there are four friends then each would get, 1.25 or 1 1/4. so this is how i solved 5 ÷ 4 = 1.25 . hope this ; )