A basket of fruits contain 10 bananas, 5 mangoes, and 5 apples. A fruit is selected at random. Calculate the probability of selecting an apple or a banana. Express the answer in percent form.
First, we need to calculate the total number of fruits in the basket:
Total number of fruits = 10 bananas + 5 mangoes + 5 apples = 20 fruits
Next, we calculate the probability of selecting an apple or a banana:
Number of apples + Number of bananas = 10 apples + 5 bananas = 15 fruits
Probability of selecting an apple or a banana = Number of apples + Number of bananas / Total number of fruits
= 15 / 20
= 0.75
Finally, expressing the probability in percentage form:
0.75 * 100% = 75%
Therefore, the probability of selecting an apple or a banana from the basket of fruits is 75%.