1. 

What is the height of the triangle?

I. The area of the triangle is 20 times its base.

II.The perimeter of the triangle is equal to the perimeter of a square of side 10 cm.

A. I alone sufficient while II alone not sufficient to answer
B. II alone sufficient while I alone not sufficient to answer
C. Either I or II alone sufficient to answer
D. Both I and II are not sufficient to answer
E. Both I and II are necessary to answer

Answer: Option A

Explanation:

 I. A = 20 x B     ⇒     1 x B x H = 20 x B        
2

⇒ H = 40.

∴ I alone gives the answer.

II gives, perimeter of the triangle = 40 cm.

This does not give the height of the triangle.

∴ Correct answer is (A).