anairamitch1804 wrote:

In 1984 a certain union had a total of 15,600 members. Was the percent increase in the total number of members in the union from 1984 to 1985 greater than that from 1985 to 1986 ?

(1) From 1984 to 1985 the total number of members in the union increased by 781, and from 1985 to 1986 the total number of members in the union again increased by 781.

(2) In 1985 the union had a total of 16,381 members, and in 1986 the union had a total of 17,162 members.

We are given that in 1984 a certain union had a total of 15,600 members. We need to determine whether the percentage increase in the total number of members in the union from 1984 to 1985 was greater than the increase from 1985 to 1986.

Statemate One Alone:

From 1984 to 1985 the total number of members in the union increased by 781, and from 1985 to 1986 the total number of members in the union again increased by 781.

Since there were 15,600 members in 1984, there were 15,600 + 781 = 16,381 members in 1985 and 16,381 + 781 = 17,162 members in 1986.

Since we have the number of members in 1984, 1985, and 1986, we have enough information to determine whether the percentage increase in the total number of members in the union from 1984 to 1985 was greater than the increase from 1985 to 1986. Statement one alone is sufficient to answer the question.

Statement Two Alone:

In 1985 the union had a total of 16,381 members, and in 1986 the union had a total of 17,162 members.

Once again, since we have the number of members in 1984, 1985, and 1986, we have enough information to determine whether the percentage increase in the total number of members in the union from 1984 to 1985 was greater than the increase from 1985 to 1986. Statement two alone is sufficient to answer the question.

Answer: D

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