Question
A shopkeeper buys 15 kg of sugar at ₹20 per kg. He
mixes it with 5 kg of sugar purchased at ₹30 per kg. If he sells the mixture at ₹25 per kg, what is his profit or loss percentage?Solution
Cost of 15 kg sugar = 15 × 20 = ₹300 Cost of 5 kg sugar = 5 × 30 = ₹150 Total cost = ₹300 + ₹150 = ₹450 Total weight = 15 + 5 = 20 kg Cost price per kg = 450 / 20 = ₹22.5 Selling price per kg = ₹25 Profit per kg = 25 - 22.5 = ₹2.5 Profit percentage = (2.5 / 22.5) × 100 = 11.11% Correct answer: a)
HCF of two numbers 70 and 140 can be expressed in the form of (20m – 110) whereas LCM of these two numbers can be expressed in the form of (40n – 20...
Rs. 21,000 is split between 'P', 'Q', and 'R' such that one-third of P’s share equals 25% of Q’s share, and equals one-seventh of R’s share. Find ...
The smallest number which when divided by 28 and 32 leaves remainder 10 and 14 respectively is:
The LCM of two numbers is 40 times its HCF. If the product of the numbers is 1440, find their HCF.
Two positive integers multiply to 5070, with their highest common factor being 13 and their sum amounting to 143. What is the difference between these t...
Find the smallest 3-digit number that leaves 2 as remainder when divided by 6, 4 and 7.
Three numbers are in the ratio 5:3:2 respectively. If the HCF of the numbers is 4, then find the LCM of the numbers.
Can you determine how many factors the number 1,560 has?
If the highest common factor of two numbers is 12, then which of the following may be the least common multiple of the numbers?
Train X running at a speed of 32 km/hr crosses train Y in 20 seconds. Find the speed of train Y (in km/hr), if the sum of the length of train X and Y is...
