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2 years ago

Of 20 test scores, four are less than or equal to 85. What is the percentile rank of a test score of 85

Mathematics

1 answer:

N76 [4]2 years ago

8 0

Answer:

Bottom 20% percentile

Step-by-step explanation:

4/20= .2

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Colin & Brian share a lottery win of £2100 in the ratio 4 : 1. Colin then shares his part between himself, his wife & th

Paraphin [41]

Answer:

His wife gets $336 more than his son.

Step-by-step explanation:

Colin and Brian:

Ratio of 4:1.

So Colin gets $\frac{4}{4+1} = \frac{4}{5}$ of the prize.

$\frac{4*2100}{5} = 1680$

Colin got $1680. Dividing between himself, his wife and their son:

Ratio of 2:5:3.

So Colin gets $\frac{2}{2+3+5} = \frac{2}{10}$ , his wife gets $\frac{5}{2+3+5} = \frac{5}{10}$ and his son gets $\frac{3}{2+3+5} = \frac{3}{10}$

Wife:

$\frac{5*1680}{10} = 840$

His wife got $840.

Son:

$\frac{3*1680}{10} = 504$

His son got $504.

How much more does his wife get over their son?

840 - 504 = 336

His wife gets $336 more than his son.

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The height of Mount Everest is times the height of a waterfall.

Hatshy [7]

Answer:

true

The height of Mount Everest is times the height of a waterfall.

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2 years ago

Of 20 test​ scores, four are less than or equal to 85. What is the percentile rank of a test score of ​85

Of 20 test scores, four are less than or equal to 85. What is the percentile rank of a test score of 85