Attach shows the scores of students in an exam

Hence the correct answer = 18% Option A
Answer:
SAS
Step-by-step explanation:
From the image attached below, in triangle ABC, AB = 15, AC = 20 while in triangle ADE, AD = 12 and AE = 16
Two triangles are said to be similar if they have the same shape, that is either their corresponding angles are the same or their corresponding sides are proportional.
For both triangle ABC and triangle ADE, they have the same angle which is ∠A. Also:


Since two sides of triangle ABC are in the same proportion as two sides of triangle ADE and they have the same angle, therefore they are similar based on the SAS (side-angle-side) similarity
Answer:
1/16
Step-by-step explanation:
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Answer:
Value of x = 400
Step-by-step explanation:
Joint variation states that describes a situation where a variable depends on two (or more) other variables, and varies directly with some of them.
Given: x varies directly with y and z.
i.e
and 
then we have the joint variation as;
......[1] where k is the constant variation.
Substitute the value of x =1200 when y =20 and z = 30 to solve for k;

Simplify:

Divide both sides by 600 we get;

Now, substitute k =2 , y =10 and z = 20 to find x;
Using [1] we have;

Therefore, the value of x is, 400