Three friends agree to save money for a graduation road trip. they decide that each of them will put $0.25 in the fund on the first day of may, $0.50 on the second day, $0.75 on the third day, and so on. at the end of may, there will be $ in their fund. (hint: there are 31 days in may.)

At the end of May, there will be $372.

Explanation:

Since we have given that

On the first day of May, each one save =$0.25

Number of friends = 3

Total save on the first day of May is given by

Similarly,

On the second day of May, each one save =$0.25

Total save on the second day of May is given by

Similarly,

On the third day of May, each one save =$0.25

Total save on the third day of May is given by

This series becomes arithmetic progression,

Here, a = 0.75

d=common difference is given by

Since there are 31 days in the month of May,

So, n=31

We need to calculate the sum of 31 terms to get our answer,

Hence, at the end of May, there will be $372.

arrange the equations with like terms in columns.

analyze the coefficients of x or y.

add the equations and solve for the remaining variable.

substitute the value into either equation and solve.

check the solution.

step-by-step explanation: