B) A grocer sold 5 kg of wheat flour at Rs 30 per kg and gained 20%. If he had sold it at Rs 27 per kg, what would be his gain or loss percent?

22.5%

Step By Step Explanation:

1) the amount which will be obtained when 5 kg of rice is sold for Rs30 per kg=150 kg

2) the amount which will be obtained when 5 kg of rice is sold for Rs27 per kg=135 kg

3)difference of Both the no. = 150-135

                                              = 15 kg

4) ans as percentage =  15% of 150

                                   =  22.5%

    WARNING:- NOT SURE WITH THE ANSWER

answer: 2 and 1

step-by-step explanation: got this question