Let the number of novels on historical, thriller and fantasy be x, y and z respectively. Given, (x + y + z)/3 = 25 => x + y + z = 75 ….. (1) And, (x + z)/2 = 20 => x + z = 40 ….. (2) From equation 1 and 2 Number of novels on thriller = y = 35 Number of novels on fantasy = 0.60 × 35 = 21 Therefore, number of novels on historical = 75 – (35 + 21) = 19
In a conference, 78% people were present, and the no. of absentees was 110. The total number of the people who were invited was
A district has 10,24,000 inhabitants. If the population increases at the rate of 2.5% per annum, find the number of inhabitants at the end of three years
In 2020, Maran earned Rs. 16,500, spending 40% of it and saving the remainder. The following year, his earnings increased by 20%, and his expenditures a...
In 2011, the total population of a village was 5280, Out of which 30% were female. In 2012, the total population increased by 10% in comparison to the p...
Monthly income of P is Rs.15000 and his monthly savings is Rs.9600. If his monthly income is decreased by 35% and monthly expenditure is decreased by 25...
if ratio of present age of Aman to that of Bineet is given as 2:3 and the ratio of present age of Aman to that of Chintu is 13:8.Then, what will be the ...
Two candidates are contesting in an election. All votes are valid votes. A candidate who gets 38% of votes is rejected by 28,800 votes. The total numbe...
Anchal allocates 20% of his monthly salary to transportation, dedicates 50% to shopping, and invests 20% of the remaining balance in food expenses. The ...
Initially, a person spends 80% of his salary and saves the remaining 20%. After receiving a 10% salary increase, his savings remain unchanged, and he sp...
After increase in the price of coffee by 25%, a person is able to buy 4 kg less for Rs. 1,640. Find the original and increased price of the coffee per k...
