In a class, every student knows french or german (or both). 15 students know french, and 17 students know german. what is the largest possible number of students in that class?

Solution:

we are given that

In a class, every student knows French or German (or both).

15 students know French, and 17 students know German.

Suppose there are x student who knows both French and German.

Then Total number of student in the class will be

But to guess the largest possible number of student in the class we can assume x=0

Hence the largest Possible number of Student in the class=32

the correct answer is you spend $55.78 more in a brand store that buy ing in a normal store.

step-by-step explanation:

brand = spend   $ 135.85 total

store = spend $80.07 total