## Trending News

Promoted

# John was born in January. On the first July 4th of his life, his aunt gives him $50 to save for his college education.....?

John was born in January. On the first July 4th of his life, his aunt gives him $50 to save for his college education. On every subsequent July 4th, she gives him $25 dollars more than the previous year. What will John's aunt give him on his 18th July 4th?

A. $475

B. $450

C. $425

D. $500

### 3 Answers

Relevance

- PuzzlingLv 71 month ago
The sequence is arithmetic:

50, 75, 100, ...

You could just add terms until you get to 18 terms.

Or you could use the formula for the nth term of an arithmetic sequence.

a[n] = a + d(n - 1)

a : first term (50)

d : common ratio (25)

n : number of terms (18)

a[18] = 50 + 25(18 - 1)

a[18] = 50 + 25(17)

a[18] = 50 + 425

a[18] = 475

Answer:A. $475

Still have questions? Get your answers by asking now.