A promissory note with face value $ 2000 is due in 175 days and bears 7% simple interest. After 60 days it is sold for $ 2030. What simple dis-count rate can the purchaser expect to earn?

Iwould say they are complementary because that’s the division of a 90 degree angle and it’s split between the middle of them

1. isolate the variable, in this case, d. subtract 35.5 on both sides of the equation.2. 52 subtracted by 35.5 is 16.53. therefore your answer would be d= 16.5this is the basics of pre algebra, isolating variable through adding, subtracting, multiplying, and dividing, if you have any other questions to ask just comment!