Ratio of efficiency of P and Q = 5:3 Let the efficiency of P and Q be 5x and 3x units per day respectively. Total work = 8x × 30 = 240x units Required time = (0.75 × 240x)/3x = 60 days
The average of three numbers P, Q and R is 1600. R is 75% more than P. The ratio of P and Q is 4:5 respectively. If R is 25% less than S, then find out ...
The average of ten numbers is A. If c is subtracted from each number except the tenth and (c-1) is subtracted from the tenth number, then what will be t...
A number is such that when it is multiplied by 6, it gives another number which is as much above from 210 as the original number (itself) is below 210. ...
The average weight of a group of five persons, A, B, C, D, and E is 62 kg. If another person K joins the group then the average weight of the group is d...
The average salary of all males and females in an office is Rs.16000 and the total number of females in the office is 16. If the average salaries of mal...
The average age of three children is 20 years. If their ages are in the ratio 3:5:7. Find the age of the youngest child.
In a cricket match the captain of one of a team scored 23 runs more than the average runs scored by the remaining 9 batsmen of that team who batted in t...
The student's marks were wrongly entered as 55 instead of 25. Due to this, the average marks for the class increased by 1 /4 The number of students in t...
Average weight of 14 nurses is 46 kg. If the weight of one more nurse is included, then average weight is increased by 1 kg. Find the weight of the newl...
In an examination, the average marks obtained by the students is 40. After correcting the quantitative mistakes, the average of 50 students is reduced t...
