J3.
1 answer:
By using the given table, we can see that the expected value is 20.97 AED.
<h3>How to find the expected value?</h3>The expected value is given by the sum between the products between the value of each outcome and the probability of said outcome.
Then, by using the table, we can write the expected value as:
Then we can see that the correct option is C, the expected value is 20.97 AED.
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well, so, you need to drain some and put some with higher percentage, seems to be, you will end up at the same 15 liters, possible the radiator's capacity, of 80% antifreeze
so, the same amount going out, of 70% is the same amount going in, of 100% antifreeze
now.. let's use the decimal format for the percents, or 70% is 70/100 or 0.7 and so on
so.. let's subtract, from the current solution, 0.7x and add 1x or x, our antifreeze concentration amount, should be 12 though
10.5 - 0.7x + x = 12
solve for "x"