Question

31. In the diagram given below, quadrilateral PQRS is
divided into six smaller triangles. The number inside
the triangle mentionsit's area. If SN/NR = 1.25 then
find the value of a + b.
P
M
Q
10
20
a
30
O
b
20
S.
N​

Answer 1

Answer:

I didn't understand this question you could give a diagram