As per the question,
Three numbers are in the ratio of 3:5:7 .
Let the number be
3x, 5x, and 7x
The sum of these numbers is 975.
3x + 5x + 7x = 975
15x = 975
x = 65
The numbers are as follows,
3x = 195
5x = 325
7x = 455
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12 Mins English English50 Questions100 Marks60 Mins English English10 Questions20 Marks12 Mins EnglishIn a group of 40 people, 25 people speak Hindi and 20 people speak both Hindi and Urdu. All the people speak at least one of the two languages. How many people speak only Urdu?
IN a certain code language 'GERMANY' is coded as 9, 7, 20, 15, 3, 16, 27. How 'FRANCE' will be coded in this language?
A person takes a loan of Rs. 5000 at 5% simple interest. He returns Rs. 3000 at the end of one year.
How much he would have to pay, in order to clear his dues, at the end of 2 years?
The interest earned on 8000 when invested in some scheme for 2 years at 7 % simple interest, per annum is half of the interest earned on another amount P invested for five years in the same scheme at the same rate of interest. Find the value of P.
Which of the following statement(s) is/are true?
A. Speed of x m/sec is equal to km/hr.
B. If a train runs at of its usual speed. it gets late by 10 minutes. The usual time of the train to cover the journey is 40 minutes.
C. A car moves at the speed of 80 Km/hr. The speed of the car in meters per second is .
D. A person crosses a 600 rn long street in 5 minutes. The speed of the person in Krn per hour is 7.2.
Choose the correct answer from the options given below:
Find the wrong term in the series given below:
3, 12, 36, 144, 432, 1738, 5184
For different sets of datasets X and Y. correlation coefficient between X and Y, that is R and standard deviation of X and Y, that is, S(X) and S(Y) are given in A-D below. Estimate the covariance between X and Y for each dataset and arrange in ascending order.
A. R= 0.5, S(X)= 8, S(Y)= 10
B. R= 4/7, S(X)= 7, S(Y)= 9
C. R= 0.7, S(X)= 12, S(Y)= 5
D. R= 19/42, S(X)= 14, S(Y)= 6
Choose the correct answer from the options given below:
If a volumes and are the surface areas of two cubes then
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If the mean of x, y and z is K, then the mean of
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