Question
If a cube of a number is subtracted from (153)², the
number so obtained is 1457, Find the number.Solution
Let the number be x. ATQ- (153)2 – x3 = 1457 23409 – x3 = 1457 x3 = 23409-1457 = 21952  x = √ (21952)  x = √ [2× 2× 2× 2× 2× 2 × 7 × 7 × 7] x = 2 × 2 × 7 = 28
In a factory, the ratio of number of male to female employees are 7: 18. If 27 male employees and 12 female employees left the factory, then the ratio b...
The ratio of the number of English books to Hindi books in a library shelf is 6:5. If 135 Hindi books are written by Pradeep, which constitutes 15% of t...
A sum of money is divided among P, Q, R and S in the ratio of 8:9:13:14 respectively. If the share of R's is Rs. 1620 more than the share of Q, then wha...
A grandfather leaves Rs. 14,350 to be divided among 4 sons, 3 daughters and 3 grandson. If each daughter receives six times as much as each grandson and...
The cost of diamond varies directly as the square of its weight. A diamond broke into four pieces with weights in the ratio 2 : 3 : 5 : 6. if the loss i...
The salaries of A and B are in the ratio 5 : 7. They both get an increment of ₹6000 each, and their new salaries are in the ratio 3 : 4. Find their or...
Ratio of males to females in village ‘A’ and village ‘B’ is 3:4 and 5:6, respectively and number of females in village ‘B’ is 25% more than ...
Ratio of monthly income to monthly expenditure of A is 18:7, respectively and monthly savings of A is Rs. 2200. Find the monthly income of A.
- Calculate the third proportional of 25 and 40.
Population of a town is 1,20,000. If number of the male increase by 7% and Females increase by 10% then the population of town would increase by 9.5 %. ...
