Question
Average marks scored by Vineet in five subjects are 85.
The average marks scored by him (excluding his highest and lowest marks) are 70 and lowest marks scored by him are 60. Find the highest marks scored by him.Solution
Sum of marks scored by him in five subjects = 5 x 85 = 425 Sum of marks scored by him (excluding his highest and lowest marks) = 3 x 70 = 210 Therefore, sum of highest and lowest marks = 425 – 210 = 215 So, highest marks scored by him = 215 – 60 = 155
20 boys working 9 hours a day can finish a task in 12 days. They all worked together initially, but after 10 days, 5 boys left. H...
55-litres of paint is added to a mixture of paint and oil in the ratio 3:5. The ratio of paint and oil in the resulting mixture is 4:3. Find the total v...
- Find the exact value of tan 225°
A company manufactures and sells two products, A and B. The cost of producing one unit of Product A is ₹50, and it is sold at a price of ₹70 per uni...
If sinθ + cosθ = 2a and tanθ + cotθ = b, then find a in terms of b.
188, 200, 219, ?, 278, 318
The cost price of 21 mangoes is Rs.200. Because of bad quality of mangoes, the shopkeeper has to sell mangoes at a loss that is equal to selling price o...
A car typically travels 20% faster than a bike. The bike takes 4 hours to cover 300 km. If the car's speed were 8 km/h less than ...
A giant circular wheel has a diameter of 63 metres. In how many revolutions will the wheel cover a total of 79.2 km?
Relevant for Exams:
