SOLUTION: JESSICA CAN DO 60 JUMPING-JACKS IN 2MINUTES.JUANITA CAN DO 150JUMPING-JACKS IN 5MINUTES. ARE THESE RATES PROPORTIONAL?

Algebra ->  Proportions -> SOLUTION: JESSICA CAN DO 60 JUMPING-JACKS IN 2MINUTES.JUANITA CAN DO 150JUMPING-JACKS IN 5MINUTES. ARE THESE RATES PROPORTIONAL?       Log On


   

Question 939941: JESSICA CAN DO 60 JUMPING-JACKS IN 2MINUTES.JUANITA CAN DO 150JUMPING-JACKS IN 5MINUTES. ARE THESE RATES PROPORTIONAL?
Found 2 solutions by josmiceli, laoman:
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
+60%2F2+=+30%2F1+
and
+150%2F5+=+30%2F1+
Yes, they are proportional rates

Answer by laoman(51) About Me  (Show Source):
You can put this solution on YOUR website!
Rate+=+%28No+of+Jumping+Jacks%29+%2F+%28Time+taken%29
For both rate to be proportional, they must be equal
For Jessica, Rate = 60/2 = 30
For Juanita, Rate = 150/5 =30
Since both rates are equal, they can be said to be proportional.
QED