Question
The price of an article is increased by 20% and then
decreased by 20%. Find the net percentage increase or decrease in the price.Solution
ATQ, Assume original price = 100. After 20% increase: Price = 120 After 20% decrease: Price = 120 − 20% of 120 = 120 − 24 = 96 Net change = 96 − 100 = −4 So price decreases by 4%.
- Find the HCF of 84 and 630.
Two men started moving in a circular path from the same place at the same time in the same direction. If they complete one revolution in 12 min and 16 m...
A boy can swim in still water at a speed of 8 km/hr. If the speed of the current would have been 3 km/hr, then the boy could swim 55 km
The product of two numbers is 5760 and their GCD is 48. What is the LCM?
The greatest number, which when subtracted from 7452, gives a number exactly divisible by each of 20, 27, 30 and 32, is:
The greatest number of four digits which when divided by 9, 12, 15 leave remainders 6, 9, 12 respectively is:
Two numbers are in the ratio 4 : 5 and their least common multiple (LCM) is 1800. What are the two numbers?
Find the smallest multiple of 10 that, when divided by 4, 6, and 9, leaves a remainder of 4 in each case.
Average monthly income of 35 workers is ₹52,000. Two new workers earning (r + 8000) and (r - 2000) join, and the average rises to ₹53,000. Find (r -...
HCF of two numbers 60 and 100 can be expressed in the form of (25m – 80) whereas LCM of these two numbers can be expressed in the form of (40n – 20)...
