Question
L’s income is 125 percent of M’s income and L’s
expenditure is 120 percent of M’s expenditure. If L’s income is 180 percent of M’s expenditure, then what is the respective ratio of L’s savings and M’s savings?Solution
ATQ, Let M expenditure = x L expenditure = 120% of x = 1.2x L income = 180% of x = 1.8x L saving = 1.8x - 1.2x = 0.6x L income = 125 % of M income M income = 1.44x M saving = 0.44x The ratio of the saving of L and M = 0.6x : 0.44x or 15:11
The average age of 32 children and their teacher's age are 28 years. If the teacher's age is excluded, the average reduces by 1. What is the teacher's age?
A cricketer scored 240 runs in his first six matches of a tournament. Find the average runs the cricketer must score in the next four matches so that hi...
The average weight of 8 people is 75 kg. When three new people with their weights in the ratio 3:4:5 joined the group, the average weight of all the peo...
Average run scored by a batsman in 18 innings is 60. In next 6 innings, he scored runs with an average of ‘x’ so that his overall average increases ...
The average number of books sold by Viren in first 5 months is 3000 and in first 6 months is 3800. If the number of books sold by him in 7th ...
The average age of a class of 17 girls is 12 years. If 3 new girls having average age of 8 years join the class, then the average age of the class becomes:
What is the average of the squares of the first 41 natural numbers?
The average number of books sold by Viren in first 3 months is 3000 and in first 4 months is 3800. If the number of books sold by him in 5th ...
Sum of ages of 55 team members is 1220 years. The average age of 20 of them is 19 years and the average age of another 15 of them is 20 years. Find the ...
The average expenditure of a man for the first seven month is Rs.12000 and for the next five months is Rs.9000. If he saves 15000 in that year then find...
