Question
What is the difference between the number of students
participated from school C and the number of girls participated from school A and B together? Study the following information carefully and answer the related questions. Number of students participated in dance from three different schools. Number of girls participated from school B and number of boys participated from school C are equal. Respective ratio of number of boys and girls participated from school A is 2:3 and number of girls participated from school A are 18 more than the number of girls participated from school C. Sum of number of participants from school B and C is 490 and 180 students participated from school A. 100 boys participated from school B.Solution
Let the number of girls participated from school B and number of boys participated from school C = x Let number of boys and girls participated from school A be 2y and 3y respectively. According to question, => 2y + 3y = 180 => y = 36 Number of boys from school A = 2y = 72 Number of girls from school A = 3y = 108 Number of girls participated from school C = 3y – 18 = 90 Now, 100 + x + x + 90 = 490 => 2x = 300 => x = 150 Number of girls participated from school B and number of boys participated from school C = 150 Required difference = (108+150) – (150+90) = 258 – 240 = 18
Ravi and Rekha, alone can complete a work in 25 days and 50 days, respectively. They started the work together and left after 10 days such that the rema...
A alone can finish a piece of work in 10 days and B alone can finish it in 15 days. They work together for 3 days and the remaining work is finished by ...
P, Q & R can finish a work in 10 days, 15 days, and 20 days, respectively, working alone. P and Q work on the first day, P and R work on the second day,...
(x + 6) workers complete 40% of a job in 8 days by working 5 hours/day. The remaining work is done by (x + 2) workers in 16 days working 5 hours/day. Fi...
Amin, Basha and Cheez can do a piece of work in 90, 40 and 12 days respectively. But they decide. That a single person will work in a day and receive Rs...
138 unit of work can be completed by P alone in 23 days. P started working alone and joined by Q after 11 days such that they completed the remaining wo...
- Two workers, A and B, can finish a task in 36 days and 48 days respectively, working alone. How many days will they take to complete the work together?
- Pipes X and Y can fill a tank in 45 minutes and 60 minutes respectively. Another pipe Z can empty the tank in 1 hour 30 minutes. If X and Z are opened firs...
8 men working 6 hours a day can complete a piece of work in 6 days. If efficiency of each woman is 20% more than that of each man, then how many women w...
- Alok finishes 60% of a project in 30 days, while Neha finishes 20% of the same in 15 days. Alok worked for 25 days and then stopped. Find the time taken by...
Relevant for Exams:
