A shopkeeper bought some lunch bags at 25 per bag and vegetable bags at 35 per bag in the ratio of 7:6. He sold them at a profit of 20% and 30%, respectively. He earned a profit of *392 after selling all the bags. Find the number of lunch bags bought.
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Answer:
28
Step-by-step explanation:
from ratio let the no. of lunch bags be 7x and vegetable bags be 6x;
∴ price of luch bags is 7x × 25 and that of vegetable bags is 6x × 35,
20% of (7x × 25)=35x
30% of (6x × 35)= 63x
35x + 63x = 392 [from the question]
∴ x=4
and lunch bags= 7x= 7×4= 28
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