A shopkeeper bought 20 kg of tea at 60 per kg. He sold 5 kg at 72 per kg, 8 kg at 70 per kg and rest at 55 per kg. Find his loss or profit per cent.

A shopkeeper bought 20 kg of rice at Rs. 55 per kg, 25 kg of rice at Rs. 50 per kg and 35 kg of rice at Rs. 60 per kg. He spent a sun of Rs. 150 on transportation. H mixed all the three types of rice and sold all the stock at Rs. 62.56 kg. His profit percent in the entire transaction is दुकानदार ने 20 kg चावल को Rs.55 kg पर 50 रुपये प्रति kg और 35 रुपये किलो चावल .60 per kg की दर से खरीदा। उन्होंने परिवहन पर 'रु। 150' की राशि खर्च की। उन्होंने तीनों प्रकार के चावल को मिलाया और सभी स्टॉक को Rs.62.56 per किलो पर बेचा। पूरे लेनदेन में उसका लाभ प्रतिशत है:

A shopkeeper bougth 10 kg of rice for Rs. 200, 5 kg of rice at Rs. 15 per kg, and 5 kg at Rs. 25 per kg. Find the average costof the rice per kg.

A shopkeeper bought 30 kg of rice at the rate of Rs. 70 per kg and 20 kg of rice at the rate of Rs. 70.75 per kg. If he mixed the two brands of rice and sold the mixture at Rs. 80.50 per kg, his gain is

Babita bought 160 kg of mangoes at Rs 48 per kg. She sold 70% of the mangoes at Rs 70 per kg and the remaining mangoes at Rs 40 per kg. Find Babita’s gain or loss per cent on the whole dealing.

Hari bought 20kg of rice at Rs 36 per kg and 25 kg of rice at Rs. 32 per kg. He mixed the two varieties and sold the mixture at Rs. 38 per kg. Find his gain per cent in the whole transaction.