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In a market research project 20% opted for Nirma detergent whereas 60% opted for surf Blue detergent. The remaining individual as ere not certain. If the difference between those who opted for surf blue and those who were uncertain as 720, how many respondents were covered in the surveys? `1440` b. `3600` c. `1800` d. Data inadequate

A

1100

B

1150

C

1800

D

None of these

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The correct Answer is:
C
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DISHA PUBLICATION-SETS-EXERCISE-2 : CONCEPT APPLICATOR
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