If the tax on wooden items is decreased by 30% and the sale increases by 10%, what effect will it have on the company's revenue?

Upwork «Business Mathematics» Upwork test
1

P = цена товара
Q1 = количество проданного товара ДО
Q2 = количество проданного товара ПОСЛЕ
T1 = налог ДО
T2 = налог ПОСЛЕ
R1 = выручка ДО
R2 = выручка ПОСЛЕ

Q2 = 1.1 * Q1
T2 = 0.7 * T1

R1 = P * Q1 * T1
R2 = P * 1.1 * Q1 * 0.7 * T1

R2 / R1 = 1.1 * 0.7 = 0.77

(0.77 - 1) * 100% = -23%