Question

theorem
Use your brain power!
In a certain gymnasium, there are 35 girls and 42 boys in the kid's section. 30 girls
and 36 boys in the children's section and 20 girls and 24 boys in the teens' section. What is
he ratio of the number of boys to the number of girls in every section?
For physical exercises, all three groups gathered on the ground. Now what is the ratio
of number of boys to the number of girls ?
From the answers of the above questions, did you verify the theorem of equal ratios?​

Answer 1

Answer:

In △ABC AB=AC

⇒∠B=∠C (Angles opposite to equal sides are equal)

Now using angle sum property

∠A+∠B+∠C=180

∘

⇒80

∘

+∠C+∠C=180

∘

⇒2∠C=180

∘

−80

∘

⇒∠C=

2

100

∘

=50

∘

now ∠C+∠x=180

∘

(Angles made on straight line (AC) are supplementary)

⇒50

∘

+∠x=180

∘

⇒∠x=180

∘

−50

∘

=130

∘