a = -4, b = 5 a² – b² =(a+b) (a-b) = (-4+5) (-4-5) =-9.
Total population of city P and Q is 2320 and 3150 respectively. If the ratio of number of males to females in city is P and Q is 5:3 and 3:2 respectivel...
The total number of students in a school is 36580. If the ratio of boys to the girls in the school is 55:63 respectively, then find the total number of ...
The price of sugar is increased by 15%. If the expenditure is not allowed to increase, the ratio between the reduction in consumption and the original c...
Ratio of males to females in village ‘A’ and village ‘B’ is 4:5 and 15:16, respectively and number of females in village ‘B’ is 25% more tha...
In a collection of coins consisting of 20-paise, 25-paise, and 50-paise denominations, the coins are present in a ratio of 45:32:14. The combined value ...
5 years ago ratio of the ages of the two persons A and B was 3:1. 3 years hence the ratio of their ages will be 7:3. Find the present age of B.
A plot has to be divided among P, Q and R in the ratio 2:3:5 respectively. If the area of plot received by R is 5200m² more than the area of plot recei...
'F' distributed sweets among his four children and retained some for himself. The three eldest girls received sweets in the ratio of 3:11:7. The total n...
300 is divided into two parts such that thrice of the first part and twice of the second part are in ratio 21:16, respectively. Find the difference betw...
Ratio of number of book to number of pen sold by a shopkeeper is 23:15, respectively while ratio of number of pen to number of pencil sold by the same s...
