The number of marbles in three bags is in the ratio of 2 : 3 : 4. If 12 marbles are added to each bag, then the ratio changed to 8 : 11 : 14. The total number of marbles in the beginning was:
Tannish travels from A to B at a speed of 20 km/h, from B to C at 15 km/h and from C to D at 30 km/h. If AB = BC = CD, then find Tannishβs average speed for the whole journey.
A trader sells an item at 25% profit. Had he bought it at 15% more and sold it for βΉ147 more, he would have earned a profit of 30%. Find the cost price of the item.
By selling a TV set for βΉ26,000, a seller earns 30% profit. If the production cost is increased by 10%, what should be the new selling price of a set so as to gain 15% profit?
A family of seven minors and some adults has an average wheat consumption of 11.10 kg. The average consumption for minors is 5.5 kg per person, and for adults, it is 16 kg per person. Find the number of adults in the family.