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First column = (14 + 11) x (14 – 11) = 25 x 3 = 75 Second column = (16 + 15) x (16 – 15) = 31 x 1 = 31 First column = (y + 9) x (y – 9) = 88 → y ² – 9 ² = 88 → y ² – 81 = 88 → y ² = 88 + 81 → y ² = 169 → y = 13
In the comparison between Colleges P and Q, the student ratio is 6:5, and in the relation between Colleges R and P, the ratio is 13:10. Additionally, th...
Rs.14400 was divided among A, B and C in the ratio 3:4:5. B kept Rs.1000 for himself, gave Rs.800 to his mother and divided the remaining money among hi...
Two candles of the same height are lighted at the same time. The first is consumed in 10 hours and the second in 8 hours. Assuming that each candle burn...
Marks scored by A and B in a test are in the ratio 12:5 respectively. If B had scored 5 more marks, then marks scored by A would be 20% more than that o...
Three numbers are in ratio 5:6:7. If the sum of the squares of those three numbers is 440 then find the sum of the three numbers.
Rs.14000 was divided among A, B and C in the ratio 2:2:3. B kept Rs.1200 for himself, gave Rs.600 to his mother and divided the remaining money among hi...
A plot has to be divided among P, Q and R in the ratio 3:5:7 respectively. If the area of plot received by R is 3800m² more than the area of plot recei...
Ratio of number of book to number of pen sold by a shopkeeper is 13:8, respectively while ratio of number of pen to number of pencil sold by the same sh...
The ratio between the number of males and females in a college is 25: 26. If the number of males increases by 20% and the number of females increases by...
The ratio between two numbers is 4:5. If each number is increased by 6, the ratio between then become 7:8, find the difference between numbers.
