Yvonne took 10 days to complete a holiday assignment. She wrote 7 pages on the first day, 11 pages on the second day, 15 pages on the third day and so on. How many pages did the assignment contain?
a. 175 pages
b. 125 pages
c. 225 pages
d. 250 pages
a. 175 pages
b. 125 pages
c. 225 pages
d. 250 pages
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Answer:
d. 250 pages
Step-by-step explanation:
a = 7 d = 15 - 7 = 4
n = 10
an = a + ( n - 1 ) d
a10 = 7 + ( 9 ) x 4
= 43
total pages
10
s10 = 2 ( 7 + 43 )
= 250 pages
Answer:
Letter b po thanks me later