Multiple choice

Bob works in a supermarket and his daily income is decided by the number of items sold by him. The number of items sold by him is equal to the difference between the number of items delivered to the store and the number of items left in the store. By what percent will his salary increase if there is an increase in both the number of delivered items to the store and the number of items left in the store? (1) There is an increase of 10% in the number of items left in the store. (2) The number of items delivered to the store increased from 2,000 to 2,200.

  1. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.

  2. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.

  3. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.

  4. EACH statement ALONE is sufficient.

  5. Statements (1) and (2) TOGETHER are NOT sufficient.
Reveal answer Fill a bubble to check yourself
C Correct answer
AI explanation

Let the initial delivered items be D, the initial left items be L, and the initial sold items be D minus L. Statement (1) gives the percentage increase for L but lacks data for D, while statement (2) shows D increases from 2000 to 2200 but lacks data for L. Using both statements together allows you to express the new salary as 2200 minus 1.10L and compare it to the old salary of 2000 minus L, proving both are required to find the percentage change.

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