Two boats started to move towards each other from two docks, located 30 miles apart. one boat moved at a speed of 2.5 miles per hour, the other moved twice as fast. how soon will the boats meet?

Let hh represent the number of hummingbirds and ss represent the number of sunbirds that must pollinate the colony so it can survive until next year. 6h+4s > 746h+4s> 74 this year, 88 hummingbirds pollinated the colony. what is the least number of sunbirds that must pollinate the colony to ensure that it will survive until next year?