I think it's x^4.
(Honestly, I feel 90% positive of this answer, so maybe just get one more opinion!)
To find the answer, we will have to find the percentage of $273 to $ 3500, and we can use the formula:
![\frac{interest received}{investment amount} \times 100%](https://tex.z-dn.net/?f=%20%5Cfrac%7Binterest%20received%7D%7Binvestment%20amount%7D%20%5Ctimes%20100%25%20)
In this case:
273/3500 x 100%
=39/500 x 100%
=7.8%
Therefore the annual interest rate would be 7.8%.
Hope it helps!
Answer:
Rs 120
Step-by-step explanation:
Let MP = m
Discount = 25% of MP = m/4
SP = MP - Discount
= m - m/4 = 3m/4
If profit is 20%, CP = 3m/4 x 100/120 = 5m/8
=> Profit = 3m/4 - 5m/8 = m/8
Given Profit - Discount = Rs 15
=> |m/8 - m/4| = 15
m/8 = 15
m = Rs 120