2 9/15 and 1 5/15 are your answers
Let us draw a picture to make the things more clear.
Attached is the image.
We have been given that

Therefore, we have

Now, in triangle bcd, we have

Now, in triangle acb, we have

Thus, ad is 15 cm.
Answer:
1 : 45
Step-by-step explanation:
Given
Rs 20 and 900 ( divide both by 20 )
= 1 : 45