A meteorologist tweeted that in the first 278 days of this year, Sydney has had 157 days with rain. This coffee shop sells umbrellas. If they buy umbrellas wholesale for $10 and on average, sell 5 umbrellas at $45 each on a rainy day (and none on other days), what annual gross profit will they make on the umbrellas if rainy days continue at the same rate for the rest of the year?
