Given that, x + y = 2 and 1/x + 1/y = 18/15 Using, 1/x + 1/y = 18/15 (x + y)/xy = 18/15 2/xy = 18/15 Therefore, xy = 15/9 Now, by using formula x3 + y3 = (x + y) [(x + y)2 – 3xy] = 2 (4 – 3 × 15/9) = 2 (4 – 5) = -2
Out of his total income, Sanjay spent 50% on rent, 20% of the remaining income on groceries, and saved 30% of the income left after his expenses. Find t...
A, B and C toll together invest Rs.72000. Ratio of their time investment is 99 :77: 84 and ratio of their profit amount is respectively 3 :2: 4. then fi...
Out of the total number of players, 100/3 % are in hotel X and the remaining are in hotel Y. If 20 players from hotel Y are shifted to hotel X, then the...
Ganesh gives 30% of her salary to his wife, 12% of the remaining amount to his children and 10% of the remaining to his parents. If has given a total am...
If the length of a rectangle is increased by 10% and the area is unchanged , then its corresponding breadth must be decreased by?
...From the salary of a software engineer, if 15% is used as house rent, 25% of the remaining is spent on household items, 25% of the remaining as income t...
What was the percentage increase of land under cultivation in Punjab in the year 2013 as against 2011?
Tim spends 22% of his monthly income in travelling. He spends 25% of his monthly income on household expenses and spends 36% of his monthly income on fa...
In a competitive examination, 70% of candidates pass and 480 candidates fail, then how many total candidates appeared in the examination?
If 33.5% of a number is 11.75, then what is the number?
