On a marked price, the difference of selling prices with a discount of 35% and two successive discounts of 20% and 15%, is Rs. 504. The marked price of the article (in Rs.) is:
A shopkeeper allows 18% discount on the marked price of an article and still makes a profit of 25%. If he gains ₹106.6 on the sale of the article, then what is the marked price of the article?
X can do a work in 3 days, Y does three times the same work in 8 days, and Z does five times the same work in 12 days. If they have to work together for 6 hours in a day, then in how much time can they complete the work?