If 5000 gets increased by 200, then you end up with 5200.
if 900 gets increased by 200, then it'd be 1100.
so in short, if we take 5200 to be the 100%, what is 1100 in percentage from it?
Answer:
The exact value of cos(15°) is √(2 + √(3)) / 2.
Answer: the plain pencil costs 10 cents and the colored pencil costs 20 cents
you keep the 2k
so 5(-45)5x is 5 * -45*5 = -1125
the answer is 2k+-1125x