The table shows the revenue and expense data for five product lines of a company. P-index for a product line is defined as the ratio of profit to revenue, where profit equals the revenue less the expense. Also, percent profit equals the ratio of profit to expense multiplied with 100. Product Share of Revenue Share of Expense 20% 32% 16% 24% 30% 25% 30% 12% 4% 7% P Q R S T If it is known that all the product lines made a loss except for one product line which made no profit and no loss, what is the ratio of the expenses to the revenue for the entire company?