Rate downstream = 12/15 x 60 = 48 km/hr Rate upstream = 48/3 = 16 km/hr Speed of current = 1/2 (Rate downstream – Rate upstream) ⇒ 1/2 (48 – 16) km/hr = 16 km/hr
A car travels 300 km at a speed of 60 km/h and another 200 km at a speed of 80 km/h. Find the approximate average speed of the car for the entire journey.
A cuboid has a length of 10 cm, a width of 8 cm, and a height of 6 cm. Find the length of its diagonal and its total surface area.
A spherical metallic shell with 6 cm external radius weighs 6688 g. What is the thickness of the shell if the density of metal is 10.5 g per cm3
If sec θ + tan θ = 5, then find the value of sin θ.
A chemist has three solutions of acid and water. The first solution has 40 percent acid, the second has 60 percent acid, and the third has 80 percent ac...
Simplify the given expression:
6 × 6 ÷ 6 of 6 × 60% of 600
A person sells two items, X and Y. The marked prices of X and Y are 25% and 40% higher than their cost prices, respectively. After a 10% discount on bot...
What is the amount allocated for Transportation and Entertainment combined?
In a school, Boys are 60% of total students. 50% Boys students failed. Total 55% of students in school fail. employees in the company are working for mo...
5, 24, 47, 76, 113, ?.
