Five years and three months.
Answer: 10511
The reason being you need to convert 63% to a decimal which would be 0.63
Then you would multiply 0.63 * 16684
And then you would get 10510.92 but you would up because you cannot have .9 of a fan
He could put 2 in each page 6 in two pages and 12 in 6 in another 2 in one page and 11 sets of three in the others and it just goes one
X + y = 90 because the 2 angles add up to 90
Now m < x = five times m < y, so x = 5y or y = x/5
so the last choice is the correct one.
30°
Here's why:
Using the well-known Pythagorian theorem we can reckon how long the hypotenuse is:
c^2=6^2+36*3 -> c=12
Knowing that sin(a)=a/c=6/12=0.5 the measure of the angle in degrees is 30°
Hope could help :)