Yesterday, Manhattan GMAT posted a GMAT question on our blog. Today, they have followed up with the answer:
Answer: C
At the end of January, the tea house has 120 pounds of green tea (40% of 300). During the month of February, it purchased an additional 200 pounds of green tea (25% of 800), meaning that it had 320 pounds of green tea out of 1100 pounds of tea all together. At the same time, it sold 210 pounds of green tea (35% of 600), leaving at the end of the month 110 pounds of green tea out of a total left over 500 pounds of tea, and 110 is 22% of 500.
