डेवियो ने कुछ आलू और अजवाइन (celery) खरीदी। आलू की कीमत $0.69 प्रति पाउंड थी, और अजवाइन की कीमत $0.99 प्रति पाउंड थी। यदि डेवियो ने कुल $5.34 खर्च किए और आलू के पाउंड की तुलना में दोगुने पाउंड अजवाइन खरीदी, तो डेवियो ने कितने पाउंड अजवाइन खरीदी?

Some friends decided to go on a picnic and the amount fixed for expenditure was ₹ 768. Due to the non-arrival of four friends, each participating friend had to bear an additional amount of ₹ 16. How many friends participated in the picnic?

From a certain number of apples, a man sells half the number of apples plus 1 to the first customer, sells 13 of the remaining apples plus 1 to the second customer, and 15 of the remaining apples plus 1 to the third customer. He then finds that he has 3 apples left. How many apples did he have initially?