Question

Restaurants often slip takeout menus under Nina's apartment door. So far, Nina has collected

20 menus, including 4 for Indian food. Considering this data, how many of the next 15 menus
slipped under Nina's door should you expect to be from Indian restaurants?
menus
Submit
Work it out
Not feeling ready yet? These can help:

Answer 1

3 indian menus

Explanation:

If we assume that the proportions would remain the same then we can use the values provided to calculate the number of indian menus. We can use the Rule of Three in this scenario, since it is a ratio problem and we are given 3 values and a variable. We simply multiply the diagonal values and divide by the remaining value to get the variable.

20 menus <====> 4 indian menus

15 menus <====> x indian menus

(15 * 4) / 20 = x

60 / 20 = x

3 = x