Answer:
7/(3a-1)
Step-by-step explanation:
I have tried to show the steps in the attached image,
if you need further explanation please let me know.
Answer and Step-by-step explanation:



θ
pi r 



Just divide 105 by 20
this gives you 5 5/20
this can then be reduced to 5 1/4
answer: 5 1/4
Answer:
3500 - 10% = 3150 rupees
Step-by-step explanation:
the customer will pay 3150 rupees
Answer:
they don't know the correct length for ad, and they just guessed