Answer: $0.3
Step-by-step explanation:
Given
The owner buys 144 pens for $28.80 i.e. each pen costs
![\dfrac{28.80}{144}=\$0.2](https://tex.z-dn.net/?f=%5Cdfrac%7B28.80%7D%7B144%7D%3D%5C%240.2)
owner sells the pen at $0.4 i.e. price marked up by
![\Rightarrow \dfrac{0.4-0.2}{0.2}\times 100=100\%](https://tex.z-dn.net/?f=%5CRightarrow%20%5Cdfrac%7B0.4-0.2%7D%7B0.2%7D%5Ctimes%20100%3D100%5C%25)
So, the claim of the owner is incorrect
The actual increase in the price to get 50% markup
![\Rightarrow 0.2\times (1+0.5)=\$0.3](https://tex.z-dn.net/?f=%5CRightarrow%200.2%5Ctimes%20%281%2B0.5%29%3D%5C%240.3)
It's 34.
You can either intuitively know 25% means one-fourth and divide 136 by 4
Or
Convert the percentage to a decimal and multiply. 136 * 0.25 = 34
You cannot find the percent error of data without knowing the true length of the rope, as percent error is essentially a comparison between what you measured and what it actually is.
Answer:
x = 18.46
Step-by-step explanation:
Find the last angle of the triangle.
180-90-72 = 18
The cosine of an angle is equal to the ratio of the adjacent side to the hypotenuse.
cos(b) = adj/hyp
CosB=a/c rewrite to get
6/CosB (72) = 19.41
Find the last side of the triangle using the Pythagorean theorem.
b=square root c^2 - a^2
b=square root 376.99 - 36
b= 18.46