Question
A spent 20% and 30% of his monthly salary on food and
rent, respectively. Of the remaining amount, he gave 15% and 20% to his mother and brother, respectively. Find the amount spent by him on food, if the difference between the amount received by his brother and the amount spent on rent is Rs. 2880.Solution
Let the monthly salary of A be Rs. ‘x’ Amount spent on food = Rs. 0.20x Amount spent on rent = Rs. 0.30x Amount received by brother = (x – 0.30x – 0.20x) × 0.20 = 0.10x So according to question: => 0.30x – 0.10x = 2880 => 0.20x = 2880 => x = 14400 So, the amount spent on food = 0.20 × 14400 = Rs. 2880
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:
In a class, the ratio of number of boys to number of girls is 8:5. If 1 boy joined the class and 2 girls left the class, then the ratio becomes 7:4. Fin...
The square of sum of two numbers is 9,801 and the sum of squares of the same two numbers is 5,265. If their H.C.F. is 9, then find their L.C.M.
LCM of two numbers is 5 times their HCF. The product of the numbers is 4500. What will be the maximum possible difference between the numbers?
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
Sum of the two numbers is 49 and their HCF and LCM are 7 and 70, respectively. Find the sum of reciprocal of the given two numbers.
LCM of two numbers is 10 times their HCF. The product of the numbers is 18000. What will be the maximum possible difference between the numbers?
The LCM of two numbers is 540, and their HCF is 18. If one of the numbers is 90, find the other number.
Let N be the greatest number that will divide 85, 112, 139 leaving the same remainder in each case. Then sum of the digits in N is:
What is the HCF of 4/5, 6/8, 8/25 ?
Relevant for Exams:
