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Let the length of train ‘A’ be ‘x’ metres Therefore, length of the goods train = ‘4x’ metres Speed of train ‘A’ = 63 × (5/18) = 17.5 m/s According to the question, 4x + x = 17.5 × 24 => 5x = 420 => x = 84 Therefore, time taken by train ‘B’ to cross train ‘A’ = {(84 + 150)/(24 + 15)} = 6 seconds
Criterion in environmental project evaluation
Autocorrelation violates which assumption of CLRM?
Any straight-line supply curve that has a positive horizontal intercept has an elasticity of supply
To gauge the sacrifice made by a taxpayer, we should use the _____ tax rate.
If the correlation between x and y is 0.6 covariance is 27, variance of y is 25, then what is the variance of x?
Assume that there are equal numbers of male and female students in a university. Of all male students, 10 per cent major in economics; and of ...
If coefficient of correlation rxy= 1, then
If the regression coefficients of x on y and y on x are -1/4 and -1/9 respectively, then what is the correlation coefficient between x and y?
You are given the following data for national economy of a country Y:
Equilibrium GDP is $6000 million.
MPC is 0.8
It is considered...
Since the 1980s, Wal-Mart stores have appeared in almost every community in America. Wal-Mart buys its goods in large quantities and, therefore, at chea...
