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Ilia_Sergeevich [38]
3 years ago
9

I’m confused on how to set 2 and 3 up. Can you please help me?

Mathematics
1 answer:
givi [52]3 years ago
5 0
2) if it refers to the gray shaded boxes out of all the boxes, then count them 5 rows × 5 columns = 5×5 = 25
The total is 10 rows × 10 columns = 10×10 = 100
Fraction: 25/100 ->> divide both by 25 = 1/4
Decimal: 0.25
Ratio: 25 grey boxes: (100-25) white boxes
= 25:75 ->> divide both by 25 = 1:3
Percent: means "out of 100" so we know it's 25 out of 100 = 25%

3) 27 is 75% of what??
let's make x = what we don't know
\frac{part}{whole}  =  \frac{percent}{100}  \\ \frac{27}{x}  =  \frac{75}{100}
Now cross-multiply: multiply top left with bottom right and make equal to the bottom left times the top right
27×100 = 75x
75x = 2700
75x/75 = 2700/75
x = 36
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