Joy organised a large wedding guests had to choose their meal from beef, chicken or vegetarian 1/3 of the guests chose beef 5/12 of the guests chose chicken 69 of the guests chose vegetarian how many guests were at the wedding

Answer: 276 guests were at the wedding.

Step-by-step explanation:

Let x represent the number of guests that were at the wedding.

The guests had to choose their meal from beef, chicken or vegetarian.

1/3 of the guests chose beef. This means that the number of guests that chose beef is x/3.

If 5/12 of the guests chose chicken, it means that the number of guests that chose chicken is 5x/12. The total number of guests that chose beef and chicken is

x/3 + 5x/12 = 9x/12

The number of guests that chose vegetarian is

x - 9x/12 = 3x/12

69 of the guests chose vegetarian. This means that

3x/12 = 69

3x = 12 * 69 = 828

x = 828/3

x = 276 guests