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Area of the track = length of track x breadth of track = 30 x breadth of track = 4500 So, breadth of track = 4500 ÷ 30 = 150 So, perimeter of the track = (30 + 150) x 2 = 360 metres So, speed of the car = (360/20) = 18 m/s Relative speed of the car with respect to the person = 18 + 5 = 23 m/s So, distance between the car and the person, 3 seconds before they cross each other = 23 x 3 = 69 metres
Samir distributed 625 gifts among 4 children. The first part of the child is twice the portion of the other child, three times the size of the third chi...
Three numbers are in the ratio 4:5:6. If the sum of the largest and smallest numbers is 60 more than the middle number, what is the largest number?
Two vessels, A and B, contain mixtures of milk and water in the ratios 11:9 and 13:37, respectively. The quantities of mixtures in A and B are in the ra...
Pulses of two varieties, which are costing for Rs.26/kg and Rs.78/kg as they mixed together. when the price of the mixture obtained is Rs.54/kg then wha...
The ratio of the number of cars and bikes in a showroom is 8:7, respectively. If 25% of cars are electric and 60% of bikes are sports bikes, find the ra...
A right prism has a square base with side of base 4 cm and the height of prism is 9 cm. The prism is cut in three parts of equal heights by two planes p...
The radii of two cylinders are in the ratio 1 : 4 and their heights are in the ratio 4 : 3.
Their volumes will be in the ratio ______.
A chemist combines three solutions with active ingredient concentrations of 10%, 20%, and 30% in the ratio 2:3:5. If the total volume of the mixture is ...
A, B And C did certain investments and the ratio of their time periods is 3:2:7 respectively. The ratio of the profit of A, B, and C is 4:3:14 respectiv...
Two partners, X and Y, invested in a business in the ratio of 5:8. After 5 months, X increased his capital by 25%, and 2 months later, he increased it a...
