1.when ricardo was 9 years old, he was 56 inches tall. ricardo is now 12 years old and he is 62 inches tall. find the percent of increase in ricardo’s height to the nearest tenth. 2.the manager at a jewelry store is arguing with his sale assistant. the manager believes that having a 50% off sale on a $49.98 necklace is the same as taking 30% off now and a further 20% off that discounted sale price later. what do you think?