All you would have to do is round to the nearest 10th number (ex. From 26 to 30) for all the clubs including both boys and girls. Then you add them all together. Rounding makes estimating easier.
In my case, I got nine months. Where both y values would equal 270.
The correct option is the first one. Independent events are exactly what you're asking for: the information you have on one event doesn't affect in any way the probability of the other.
A classic example is the roll of two dice: assume that you roll the first one and get a 4. Does this imply anything on the outcome of the second die? No, all events 1,2,3,4,5,6 are still equally distributed, no matter the result of the first die.
Answer:
its 420
Step-by-step explanation:
420+69+69=420