Question

Rebecca is taking measurements of her window so she can order custom-made blinds online. She discovers her window is 24 1/2 inches by 30 3/8 inches. The website recommends ordering outside-mounted blinds which are 2 percent larger than the window. The site asks for blind measurements in decimals rounded up to the nearest tenth. What size blinds should Rebecca order?

Answer 1

Answer:

Dimensions of the window blinds should be 25 inches × 31 inches

Step-by-step explanation:

Rebecca's window dimensions are $24\frac{1}{2}=\frac{49}{2}$ inches by $30\frac{3}{8}=\frac{243}{8}$ inches

The website recommends ordering outside mounted blinds 2% larger than the window.

Therefore, length of the window blind = $\frac{49}{2}+(\frac{2}{100} \times \frac{49}{2})$

= $\frac{49}{2}(1+\frac{2}{100})$

= $\frac{49}{200}$

= 24.99 inches

≈ 25.0 inches

Now width of the window blind = $\frac{243}{8}+\frac{2}{100}\times \frac{243}{8}$

= $\frac{243}{8}(1+\frac{2}{100})$

= $\frac{243}{8}(\frac{102}{100})$

= 30.98

≈ 31.0 inches

Therefore, dimensions of the window blinds will be 25 inches × 31 inches

Answer 2

We know that

the dimensions of the windows are-------> 24 1/2 in x 30 3/8 in
24 1/2------> (24*2+1)/2-----> 49/2 in
30 3/8-----> (30*8+3)/8-----> 243/8 in

 The dimensions 2 percent larger than the window are
(49/2)*1.02-----> 24.99 in-------> 25 in
243/8*1.02-----> 30.9825 in-----> 31 in

the answer is
25 in x 31 in