Posted by **keisha** on Monday, May 19, 2008 at 9:35am.

32 candidates took examinations at centre. 11 took french,9 took spanish and x took both,18 took neither subject

1.Write an expression in x for the number of candidates in the universal set

2.Calculate the value of x

- maths (sets) -
**Reiny**, Monday, May 19, 2008 at 11:16am
Use Venn diagrams

Draw two intersecting circles, label one French, the other Spanish

Place x in the overlap, 11-x in the non-overlapping part of the French circle and 9-x in the non-overlapping part of the Spanish circle. Put 18 outside the two circles.

11-x + x + 9-x + 18 = 32

solve for x=6

## Answer This Question

## Related Questions

- Math - 8 Children divided 32 apples. Kitty took 1 apple, Mary took 2, Sherrie ...
- Math - Every Wednesday is salad bar day at Ashley's school. The most popular ...
- English - 1. He took a picture of the house. 2. He took four pictures of the ...
- Math - In an examination, 1/5 of the candidates failed. It is known that 240 ...
- Biomechanics - Describe the human gait cycle. Explain the sinusoidal pattern ...
- math - I have to find how many brownies I MADE IF MY SISTER TOOK 1/2, MY BROTHER...
- math - From a bag of peanuts, phillip took 1/3, then joy took 1/4 of the ...
- 7th grade math - What's the quickest amount of time that all four kids can get ...
- quanta tive skills and reasoning - In a class of 250 students it was found that...
- Math - 60% of candidates who took an examination passed .if 10 of the candidates...

More Related Questions