Mary competes in a long jump con tion. Her first jump is 4.8 m.
Her best jump is 10% more than this. However, her best jump is 20% lower than the winning jump.
Work out the length of the winning jump.
10% = 10 / 100 = 0.1
20% = 20 / 100 = 0.2
Her best jump is 10% more than this means: her best jump is
4.8 + 10% more than this = 4 8 + 0.1 • 4.8 = 4.8 • 0.48 = 5.28 m
Her best jump is 20% lower than the winning jump means her best jump =
the winning jump - 20% of the winning jump =
the winning jump - 0.2 of thenwinning jump =
0.8 of the winning jump
0.8 of the winning jump = 5 28 m
Divide both sides by 0.8
the winning jump = 5 28 m / 0.8 = 6.6 m
competition*
if it helps, I know that the answer is 6.6 but I don’t quite understand it. Thank you for the help.
her best jump = 4.8 * 1.10 = 5.28
winning jump is 5.28/0.80 = 6.60
Thank you very much! This is clear now :)
6.6
To find out the length of the winning jump, we first need to calculate Mary's best jump.
We know that Mary's first jump is 4.8 m. To find her best jump, we need to increase this distance by 10%.
To calculate 10% of a number, we multiply it by 0.1. So, Mary's best jump is 4.8 m + (4.8 m * 0.1) = 4.8 m + 0.48 m = 5.28 m.
Next, we know that Mary's best jump is 20% lower than the winning jump. To find the winning jump, we need to increase Mary's best jump by 20%.
To calculate 20% of a number, we multiply it by 0.2. So, the winning jump is 5.28 m + (5.28 m * 0.2) = 5.28 m + 1.056 m = 6.336 m.
Therefore, the length of the winning jump is 6.336 m.
Oh, jumping right into the math game, are we? Alright, let's get those calculations rolling!
Mary's first jump is 4.8 meters. Her best jump is 10% more than that. So, if we add 10% of 4.8 to itself, we get 5.28 meters.
Now, her best jump is also 20% lower than the winning jump. To find the winning jump, we'll need to do a bit of reverse engineering. If we divide 5.28 meters by 0.8 (which represents 100% - 20%), we get the length of the winning jump.
Math time! *puts on a mathematician hat*
5.28 / 0.8 is equal to... drumroll, please... 6.6 meters!
So, the length of the winning jump is 6.6 meters. Phew, we did it! Keep jumping high, Mary!