the answer is x=47 hope this helps
answer:
338 out of 520
step by step:
13 out of 20 dont favor mystery
13:20
? :520
520÷20=26
13×26= 338
338 students out of 520 do not favor mysteries
Answer:

Step-by-step explanation:
We have been given that 1/2 of the children at a party like chocolate ice cream, 2/3 like vanilla ice cream, and 1/3 like chocolate and vanilla.
To find the fraction of children, who like vanilla also like chocolate, We will divide the fraction of children who like chocolate and vanilla by the fraction of children who like vanilla.

Since we know that dividing a fraction by another fraction is same as multiplying the first fraction by the reciprocal of second fraction.

After cancelling out 3 from numerator and denominator of our fraction, we will get,

Therefore, the fraction of those who like vanilla also like chocolate is
.
Step 1: LCM of 24 , 30 and 60 = 120
so 120 is the least no which is divisible by all 24 , 30 and 60
Step 2: factors of 120 will be 2^3 * 3 * 5
so the least perfect square, which is divisible by 24, 30 and 60 will be
(2^3 * 3 * 5) x ( 2 * 3 * 5 ) = 3600
3600