The sum of 15 and 5, divided by 10.

a) 15 - 5 / 10

b) 15/10 + 5

c) 15 + 5 / 10

d) (15 + 5) / 10

The correct answer is D. (15 + 5) / 10

Step-by-step explanation:

Let's resolve the question, this way:

The sum of 15 and 5, divided by 10.

The sum of 15 and 5 = 15 + 5, but like the result of this addition will l be divided by another number, we should use the parenthesis.

So, we have (15 + 5) / 10 because the sum of 15 and 5 is divided by 10 not just the second term, in this case 5.

The correct answer is D. (15 + 5) / 10