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What was the amount of money awarded to the recipient

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What was the amount of money awarded to the recipient of a research grant?

(1) Of the amount awarded, 50 percent was given to the recipient immediately.
(2) Of the amount awarded, $75,000 was to be given to the recipient upon completion of research.

[spoiler]OA=E[/spoiler].

Why are insufficient the statements? Could any expert clarify this for me? I'd be thankful.
Source: — Data Sufficiency |

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by ceilidh.erickson » Mon Mar 26, 2018 10:25 am
This question is asking us for a total VALUE of money awarded.

(1) Of the amount awarded, 50 percent was given to the recipient immediately.
This just gives a proportion, but no actual value. Insufficient.

(2) Of the amount awarded, $75,000 was to be given to the recipient upon completion of research.
This gives a partial value, but not a total. Insufficient.

(1) & (2) together:
Are the only 2 times the recipient received money 1) immediately and 2) on completion? If so, the $75k would = 50% of the total.

If the recipient received money another time (halfway through the research, etc), then $75k would represent less than 50% of the total.

Insufficient. The answer is E.
Ceilidh Erickson
EdM in Mind, Brain, and Education
Harvard Graduate School of Education