The length of a rectangle is increased to 2 times its original size and its width is increased to 3 times its original size. If the area of the new rectangle is equal to 1800 square meters, what is the area of the original rectangle? Choose the correct choice from the following options:
A) 5 hours 5 minutes
B) 8 hours 5 minutes
C) 7 hours 5 minutes
D) 6 hours 5 minutes
E) 3 hours 5 minutes
If L and W be the original length and width of the rectangle and its area is given by   L * W   After increase the length becomes 2 L and the width becomes 3 W. The area is then given by (2 L) * (3 W) and is known. Hence   (2 L) * (3 W) = 1800   Solve the above equation to find L* W   6 L * W = 1800   L * W = 1800 / 6= 
<gadget id="calculator">1800 / 6</gadget>
<output>300</output>
300 square meters , area of original rectangle   Pump A can fill a tank of water in 5 hours. Pump B can fill the same tank in 8 hours. How long does it take the two pumps working together to fill the tank?(round your answer to the nearest minute).   Solution   In 1 hour pump A can fill 1/5 of a tank and pump B can fill 1/8 of the same tank. So in 1 hour the two pumps working together can fill   1/5 + 1/8= 13 / 40 of a tank   Since the rate of the two pumps working together is 13/40, the time t needed to fill the tank by the two pumps is found by solving   (13/40) t = 1   t = 40 / 13 = 39/13 + 1/13 hours   = 3 hours and (1/13)*60 minutes   = 3 hours 5 minutes (rounded to the nearest minute)   correct answer 3 hours 5 minutes
<result>E</result>
The length of a rectangle is increased to 2 times its original size and its width is increased to 3 times its original size. If the area of the new rectangle is equal to 1800 square meters, what is the area of the original rectangle?