Question
The ratio of males and females in a zoo is 6:7
respectively and the percentage of children among males and the percentage of children among females are 15% and 25% respectively. If the number of adult females in the zoo is 4725 then what will be the total population in a zoo?Solution
Let the number of males and females be 6x and 7x respectively. Percentage of children among females = 25% So, 75% of females are adults, => 75/100 × 7x = 4725 => 7x = 6300 => x = 900 Total population = 6x + 7x = 13x = 13 × 900 = 11700
- Two cars βXβ and βYβ, which were 750 km apart, started traveling towards each other at the same time and met after 6 hours. If the speed of car β...
Bike X travels 180 km in t hours and bike Y travels 90 km in (t/2) hours. If bike X covers 150 km in 2.5 hours, then how many kilometres will bike Y tra...
If the diameter of a sphere is 42 cm, find the total surface area of the sphere.
βAβ and βBβ started moving towards each other at same time with a speed of 22 km/hr and 14 km/hr, respectively. If the distance covered by βAοΏ½...
Two motorcycles, a Honda and a Hero, set off simultaneously from the same location, aiming for the same endpoint. The Honda travels at a speed of 48 km/...
Anamika travels a distance of 900 km at a constant speed. However, when she increases her speed by 10 km/hr, she completes the journey 3 hours faster. ...
A motor-cycle covers 90 km with a speed of 40 km/hr. find the speed of the motor-cycle for the next 90 km journey so that the average speed of the whole...
In a 1200-metre race, 'Karan' beats 'Arjun' by '240' metres and 'Veer' by '360' metres. If 'Arjun' and 'Veer' participate in a 600-metre race, and 'Veer...
Bike covers 22 km in 2 hours, 48 km in 3 hours, and 30 km in 5 hours. Find the average speed of the bike
If a car runs at 30 km/hr, it reaches its destination late by 15 minutes but if runs at 45 km/hr it is late by 7 minutes. What is the correct time for t...
Relevant for Exams:
