X/yz is the answer I believe
What I do in my school is Part over a Whole equals % over 100.
So the whole is 80, the percent is 80% over 100. We need to find the part so we cross multiply. 80×80% is 1600. Divide that by 100 and u get 16 points.
HOPE THAT HELPS!
Jean takes <u>1.86 minutes</u> to swim 100m
Sean takes <u>2.12 minutes </u>to swim the same 100m
2.12 - 1.86 = <u>0.26 mins</u>
-
Answer: Sean takes<u> 0.26 mins</u> longer than Jean to swim the 100m.