Last month dory biked 11 times as many miles as karly. together theybiked a total of 156 miles. how many miles did dory bike last month show all working.

Jada has a meal in a restaurant she adds up the prices listed on the menu for everything they ordered and gets a subtotal of $42.00. when the check comes, it says they also need to pay $3.99 in sales tax. what percentage of the subtotal is the sales tax