Data Sufficiency (DS) | Re: 12 Days of Christmas GMAT Competition - Day 6: Starting December 1st

GMAT Club OfficialExplanation:

Starting December 1st, the Grinch begins deflating a red balloon filled with helium and a blue balloon filled with air at Santa's workshop. Each day, he releases m% of that day's remaining helium volume from the red balloon and n% of that day's remaining air volume from the blue balloon. After 10 days, will there be a greater volume of helium in the red balloon compared to the volume of air in the blueballoon?

Essentially we are given two quantities that decrease daily by m% and n%, respectively. The question is whether, after 10 days, the first quantity (helium) is greater than the second one (air).

(1) The ratio m to n is 3 to 1.

This tells us the ratio of the percent decrease. However, we know nothing about the initial values (volumes). Not sufficient.

(2) The initial ratio of volumes of helium and air in the balloons were 6 to 5.

This gives us the initial ratio of the quantities. However, we know nothing about the percent decreases. Not sufficient.

(1)+(2)
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Statistics : Posted by Bunuel • on 18 Dec 2023, 06:00 • Replies 37 • Views 617

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