Question
In a hotel, the monthly usage of Mixed Spices is 8 kg,
and the cost per kilogram of Mixed Spices is Rs. 'a'. If the price per kilogram increases by  and the consumption decreases by 25%, the total expenditure on Mixed Spices reduces by Rs. 60. Calculate the initial total expenditure on Mixed Spices.Solution
ATQ, Initial total expenditure on Mixed Spices = 8 × a = Rs.’8a’ When per kg cost of Mixed Spices is increased by 11(1/9)% and consumption of Mixed Spices is decreased by 25%. Per kg cost of Mixed Spices = a * (1000/900) = Rs. (10a/9) Consumption of Mixed Spices = 75% of 8 = 6 kg So, new total expenditure on Mixed Spices = 6 × (10a/9) = Rs. (20a/3) From the question: 8a – (20a/3) = 60 a = 45 So, initial total expenditure on Mixed Spices = 8 × 45 = Rs.360
Two trains, A and B, start from two stations 240 km apart at the same time. Train A travels at 60 km/h and Train B travels at 40 km/h. After how much ti...
A man travels to his destination in 8 hours at his normal speed. If his speed decreases by (1/10) , he travels 40 km less in the same time. Determine hi...
A car travels from A to B at a speed of 60 km/h, and returns from B to A at a speed of 40 km/h. What is the average speed of the car for the entire jour...
A car running with a speed of 55 km/hr takes 12 hours to go from 'A' to 'B'. If on the way back from 'B' to 'A', the car takes 20% less time than it tak...
Ravi planned to cover a distance of 150 km by train. But due to a technical issue, the speed of the train dropped by 25%, and he reached his destination...
A was travelling from point X to point Y. He increased his speed by 16 km/h after every hour. He reached his destination in 18 hours. If his initial spe...
A train travels at a speed of 90 km/h. It leaves station A at 10:00 AM and arrives at station B at 12:00 PM. How far apart are the two stations?
Ajay and Vishal left the place ‘X’ with different speeds which are in the ratio 5:3 respectively. Ajay left the place 36 seconds after Vishal. If af...
A train is travelling at the rate of 45km/hr. How many seconds it will take to cover a distance of 4/5km?
Ajay and Vishal left the place ‘X’ with different speeds which are in the ratio 9:4 respectively. Ajay left the place 30 seconds after Vishal. If af...
