Question
The average marks scored by boys and girls in a class
are 48 and 32, respectively. The total marks obtained by the entire class is 1680, with 40 students in total. How many boys are there in the class?Solution
Average marks of all the students = 1680/40 = 42 Applying Alligation we get 
Number of boys in the class = 5/8 × 40 = 25
A spent 25% of his monthly income on study and 55% of the remaining on rent. If amount spent on rent is Rs. 825, then find the amount spent on study
If a sum of money is to be divided among A, B, C such that A’s share is equal to thrice B’s share and B’s share is 4 times C’s share then their ...
'A' and 'B' started a partnership by investing Rs. 9,000 and Rs. 12,000 respectively. 25% of the total profit is given to 'A' for managing the business,...
Meera started a business with a capital of Rs. 4000. After 2 months, Mohan joined her with a capital, which is 50% more than the capital of Meera. Find ...
'Akash', 'Bishnu', and 'Chintu' formed a partnership with investments of Rs. 4800, Rs. 3600, and Rs. 6400, respectively, for durations of 8 months, 1 ye...
‘X’ and ‘Y’ started a business together such that the ratio of their investment is 6:11, respectively. If ‘X’ and ‘Y’ invested for 10 m...
Nikhil and Saurabh started a business together by investing a total of Rs. 24000 in the ratio of 7:5, respectively. After 6 months, Nikhil increased hi...
A and B invested Rs.4000 and Rs.8000 in a business respectively and after 5 months B withdrawn 50% of his initial investment and again after 5 months he...
M and N started a business by investing Rs.4000 and Rs.5000 respectively. After 7 months, M and N increased their investments by 30% and Rs.2400 respect...
A and B start a business with investments of Rs. 60,000 and Rs. 80,000 respectively. After 6 months, A withdraws one-third of his capital, while B adds ...
Relevant for Exams:
