How many periods are there in the Modern Periodic Table?
The Modern Periodic Table consists of 7 horizontal rows known as periods. Each period corresponds to a new principal energy level which holds the elements placed according to their increasing atomic number.
12 children and 18 men complete an artwork in 9 days. Each child takes twice as long as a man to finish the artwork. How many days will it take for 18 m...
A, B and C alone can complete a work in 12, 24 and 20 days respectively. All of them started working together but after 2 days from start A left the job...
Kusum, Joy and Mona together can complete a piece of work in (y-18) days. The efficiency of Kusum is 62.5% less than the efficiency of Mona. Joy alone c...
Ram can do a piece of work in 12 days and Shyam can do the same work in 20 days. They both started work together, Ram left 4 days before the completion ...
Shivam invested 25000 at 12% p.a. simple interest for ‘x’ months. If at the end of ‘x’ months, he received a total amount of Rs.30000. What is t...
A can cultivate 3/5th of the land in 15 days and B can cultivate 1/4th of the land in 10 days. In how many days working together A...
Brahma, Vishnu and Mahesh are three workers, employed by a Contractor. They completed the whole work in 20 days. Initially all of them worked together, ...
A can complete a task 40% more efficiently in 25 days, whereas B, with a 25% efficiency boost, can finish the same task in 21 days. They collaborated at...
A and B together, B and C together and A and C together can complete a piece of work in 18 days, 15 days and 10 days respectively. Find the ratio...
P can do a piece of work in 30 days. Q do the same work in 40 days. R can do it in 35 days. P and R worked for 4 days and handed it to Q. Q worked for s...
