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a + 1/a = 12 Squaring both sides, (a + 1/a)2 = 122 a2 + 1/a2 + 2 = 144 a2 + 1/a2 = 144 - 2 a2 + 1/a2 = 142
A, B and C has total 60 toffies with them. A has 25 toffies and the number of toffies with C is 5 less than that with B. How many...
Three numbers are in the ratio 4:5:6. If the sum of the largest and smallest numbers is 60 more than the middle number, what is the largest number?
The proportion of books sold by Sita on Monday to those on Tuesday stands at 8:5. Sita's book sales on Wednesday exceed Tuesday's by 34, while Thursday'...
The total number of men to the total number of women in Offices A and B is in the ratio 50:13. Additionally, the number of women in Office A to those in...
Rs. 1080 was to be distributed between P, Q, and R in the ratio (1/4):(1/6):(1/3), but due to a mistake, it was distributed in the ratio 10:8:6. How muc...
In a wallet, the proportion of one-rupee coins to two-rupee coins is 5:6. Within one section of the wallet, the ratio of one-rupee to two-rupee coins is...
The sum of two numbers is 25 and their difference is 15. The ratio of the numbers is:
Ratio of income of A and B is 7:5 and the ratio of expenditure of A and B is 2:3. The savings of B is Rs.3500. If the expenditure of A gets double then...
The ratio of the number of cars and bikes in a showroom is 8:7, respectively. If 25% of cars are electric and 60% of bikes are sports bikes, find the ra...
If the ratio of the sum invested and simple interest received after 1 year is 25:9 respectively, then find the rate of interest.
