Question
After increase in the price of coffee by 25%, a person
is able to buy 4 kg less for Rs. 1,640. Find the original and increased price of the coffee per kg.  ÂSolution
Let the original price (O.P.) be Rs. x per kg. ∴ New price (N.P.) = 125% of x = Rs. 5x/4 per kg. Quantity of coffee the person could buy at original price = 1640/x kg. Quantity of coffee he can buy at new price = (1640 × 4)/5x = 1312/x kg Given that difference between the quantity at original price and at new price is 4 kg. ∴ 1640/x - 1312/x = 4 ⇒ 328/x = 4 ⇒  = 82 ∴ O.P. = Rs.82 and N.P. = Rs. 5x/4 = (5 × 82)/4 = Rs.102.5
Let N be the greatest number that will divide 85, 116, 147 leaving the same remainder in each case. Then sum of the digits in N is:
The greatest number, which when subtracted from 5260, gives a number exactly divisible by each of 12, 16, 20 and 25, is:
Calculate 50% of the L.C.M of 208 and 216.
The LCM of two numbers is 4 times of their HCF. The sum of LCM and HCF is 350. If one of the number is 200, then the other number is:
The Highest Common Factor (HCF) and Least Common Multiple (LCM) of two numbers, X and Y, are given as 8 and 80, respectively. Additionally, the differen...
The HCF of 2165 and 7409 is 239, their LCM is:
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)...
Ratio of two numbers 7:11 and their LCM is 1540. Find the sum of the given two numbers.
Determine the LCM of (8/35) and (24/5).
Find the LCM of the following fractions:
4/13, 5/7 and 7/5Â
