Wednesday

July 23, 2014

July 23, 2014

Posted by **JAZZY** on Wednesday, November 24, 2010 at 9:15am.

- Maths -
**drwls**, Wednesday, November 24, 2010 at 9:39amYour period after 50% should be a comma.

Let the old length and width be a and b, and the new values A and B

a = (3/2)b

A = B + 8

B = 1.5 b

A+B = (8/5)(a+b)

You need to solve four equations in four unknowns. Once you get A and B, the area is A*B

a + b = (5/2)b

A + B = 2B +8

A + B = (8/5)(a+b)

2B +8 = (8/5)(a+b) = 4 b

B = 2b -4 = (3/2)b

0.5b = 4

b = 8

a = (3/2)b = 12

A = B +8 = 20

B = A -8 = 12

A*B = 240 is the new area

**Related Questions**

maths - A rectangle has length & width in the ratio of 3:2.If the length is ...

Algebra - The width of a rectangle is three fourths of the length. The perimeter...

basic geometric - 10. a rectangle has width the same as a side of a square whose...

Math - Determine the perimeter and area of a rectangle that has a width of 6 ...

Algebra - The width of a rectangle is 1/6 the length. If the length and the ...

math - How would I setup the equation for the perimeter and area of a similar (...

algebra - Perimeter of a rectangle. The width of a rectangle is three fourths of...

alegbra1 - The length of a rectangle is twice the width. If the length is ...

Maths - The length and width of a rectangle are in ratio 11:7. If its perimeter ...

algebra - The width of a rectangle is three fourths the length. The perimeter of...