Problem $8-1$

Compute the cost of not taking the following trade discounts: $($Use $365$ days in a year. Round the final answers to $2$ decimal places.$)$

a$.\frac{3}{20},$ net $60.$

Cost of lost discount $\%$

b$.\frac{2}{18},$ net $55.$

Cost of lost discount $\%$

c$.\frac{3}{18},$ net $50.$

Cost of lost discount $\%$

d$.\frac{3}{19},$ net $170.$

Cost of lost discount $\%$