Question
A wheel has a diameter of 28 meters and rotates at a
speed of 25 revolutions per minute. How much distance will the wheel travel in 32 minutes?Solution
ATQ, Radius of the wheel = (28/2) = 14 metres So, circumference of the wheel = 2 Γ Ο Γ radius = 2 Γ (22/7) Γ 14 = 88 metres Distance covered by the wheel in one revolution = circumference of the wheel. So, distance covered by the wheel in one minute = 88 Γ 25 = 2200 metres (2200/1000)= 2.2 km So, distance covered by the wheel in 32 minutes = 2.2 Γ 32 = 70.4 km
What is the ratio whose terms differ by 30 and the measure of which is 4/9?
An amount is distributed among X, Y, Z, and W in the ratio 3:5:7:4 respectively. If the amount received by Y is Rs. 2,000 , then find the amount receiv...
If A : B = 3 : 5 and B : C = 10 : 7, find the ratio A : B : C.
If 50% of a certain number is equal to 3/5th of another number, what is the ratio between the numbers?
Find the fourth proportion of 3, 7 and 15.
A, B and C entered into a partnership by investing in the ratio of 6:3:4. At the end of the year, the total profit is in the ratio of 12:3:8. Find the r...
The ratio of heartbreak to emotions is 2:3:4:5 The price of heart is inversely proportional to the square of emotions. If there is a loss of Rs 1420 due...
If A varies directly as B and inversely as C and A = 8, B = 2 and C = 5, what is the value of A when B = 6 and C = 5?
- If the mean proportion of 0.49 and 2.25 is 'k', then find the value of '4k'.
Relevant for Exams:
