Question

UN TC
sum of the
m of the squares of their reciprocals, then prove that 2a-c = c-
the area of a rectangle reduces by 20 m², if its length is increase
breadth is reduced by 2 m. The area increases by 12 m², if the 1
by 3 m and the breadth is increased by 4 m. Find the dimensions
Among the group of students 10% scored marks below 20, 20
between 20 and 40, 35% scored marks between 40 and 60, 20
between 60 and 80. The remaining 30 students scored marks bet-
Prepare frequency distribution table and draw a histogram.
ve any one of the following subquestions :
The following table shows the frequency table of literacy rate
25 mitian Dind the moon liter
rote by acoumed mann metho​

Answer 1

Answer:

=(L+1)(B-2)=LB-20

=LB-2L+B-2=LB-20

=B=2L-18 ---------------eq(1)

=(L-3)(B+4)=LB+12

=LB+4L-3B-12=LB+12

=4L-3B=24

=4L-3(2L-18)=24 ----------from eq(1)

=4L-6L+54=24

=-2L=24-54

=-2L=-30

=L=15m

In eq(1), B=2L-18

B=(2×15)-18

B=30-18

B=12 m

Thus, Length is 15m and Breadth is 12m.

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