165 in a 3x to 8x ratio
3x + 8x = 165
11x = 165
x = 15
165 can be put in a 3(15) to 8(15) ratio
which is a 45 to 120 ratio
165 in the ratio of 3 to 8 is 45 to 120.
Also notice how 45 + 120 = 165, so our answer is correct.
Note:
a(b) = ab = a x b = a times b