Week 268 (7th October 2022)

Helen follows a gluten-free diet and is at an Indian restaurant with her friends.

On the menu there are 22 main dishes, of which 4/11 are gluten-free.

7 rice dishes, which are all gluten-free.

5 naan breads, of which 40% are gluten-free.

There is a meal deal on the menu – choose one main dish, one rice dish and one naan bread.

How many of the possible meal deals are totally gluten free? 

Answer:  

Number of gluten free: 

Main dishes = 4/11 * 22 = 8 

Rice dishes = 7 

Naan breads = 5 * 0.4 = 2 

So total combination of dishes = 8 * 7 * 2 = 112 different meal deals