A company selling light bulbs claims in its advertisements that its light bulbs’ average life is 1000 hours. In fact, tte lifespan of these light bulbs is normally distributed with a mean of 1000 hours and a standard deviation of 100 hours. Use this information to answer Parts A and B below. ANSWER NOW FOR THE BRAINLIEST

Sarah took the advertising department from her company on a round trip to meet with a potential client. including sarah a total of 11 people took the trip. she was able to purchase coach tickets for $280 and first class tickets for $1280. she used her total budget for airfare for the trip, which was $6080. how many first class tickets did she buy? how many coach tickets did she buy?