00:01
Hi, today we are solving the question in which lawn 1 is 30 feet by 25 feet and lawn 2 measure is given as 20 feet by 15 feet.
00:17
Here bird takes 30 minutes to move lawn 1, 30 minute fewer than it takes to move the rectangular lawn that is 20 feet by 15 feet.
00:39
Now if he moves the two lawns at the same rate per square foot, so how long it takes to move him both lawns.
00:49
So lawn 1, if we say lawn 1 will be equal to area of lawn 1 is equals to 750 area a1 of lawn 1 is 75 square feet and area a2 of lawn 2 is 300 square feet.
01:17
Now from here determining rate per square foot.
01:21
So let us take let bird's rate per square foot is x.
01:34
So it takes him x into 750 minutes to move lawn 1 and it takes him x into 300 minutes to move lawn 2.
01:52
Now from here using the information so we can take it as the equation will become 750 x is equals to 300 x plus 30.
02:10
Now on solving this equation we will get it as 750 subtracting 300 x from both sides.
02:22
So 750 x minus 300 x is equals to 30.
02:27
Now we get it as 450 x is equals to 30...