Functional programming

Assume you want to build two functions for discounting products on a website.Function number 1 is for student discount which discounts the current price to 10%.Function number 2 is for additional discount for regular buyers which
discounts an additional 5% on the current student discounted price. Depending on the situation, we want to be able to apply both the discounts on the products.Design the above 
two mentioned functions and apply them bothsimultaneously on the price.
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def student_discount(price):
    sd = price - (price*10)/100
    return(sd)
def regular_buyer(sd):
    add = sd - (sd*5)/100
    return(add)
originalprice = 200
price= regular_buyer(student_discount(originalprice))
print(price)