Question 1189307
Mary is making a party mix to bring to school.
 She believes that the perfect ratio of pretzels to peanuts is 3 to 5.
If Mary knows that she is going to use 65 peanuts in the mix, how many pretzels will she need? 
:
let p = no. of pretzels required
:
Write a simple ratio equation
{{{p/65}}} = {{{3/5}}}
cross multiply
5p = 65 * 3
5p = 195
p = 195/5
p = 39 pretzels required