In 1984 a certain union had a total of 15,600 members. Was the percent increase in the total number of...

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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.

The OA is D

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Option 1 gives the yearly increase in absolute numbers, so one can calculate the respective % increase for both years. Sufficient
Option 2 gives the total at the end of each of the 2 years; we can calculate the absolute increase/year from there. Sufficient.

The answer is thus D.