Your friend sells you a bicycle for 50 $ and a helmet for1 5 $. The total cost is 110 % of what your friend spent originally. How much did your friend spend originally? How much money did your friend earn by selling the bicycle and helmet to you?

Which of the following was not a criticism of the of new york city mayor's office of emergency management's command center? a. how close it was to a known terrorist target b. that it was on the 23rd floor c. its location was above an electrical relay station d. its lack of air, power and water supplies