There are some green counters and some red counters in a bag. At the start, 7 of the counters are green, the rest are red.
Jacinta takes at random a counter from the bag.
She does not put the counter back in the bag.
Jacinta then takes at random another counter from the bag.
21
The probability that the first counter Jacinta takes is red and the second is green is
80
Work out the number of red counters in the bag at the start.

Woodland bicycles makes two models of off-road bicycles: the explorer, which sells for $250, and the grande expedition, which sells for $350. both models use the same frame, but the painting and assembly time required for the explorer is 2 hours, while the time is 3 hours for the grande expedition. there are 375 frames and 450 hours of labor available for production. how many of each model should be produced to maximize revenue? a. 200 explorers 50 grande expeditions c. 225 explorers 0 grande expeditions b. 150 explorers 10 grande expeditions d. 325 explorers 50 grande expeditions