RRB Government Jobs Exams

The sum of the perimeters of two different squares is 32 centimeters, and the difference between their perimeters is 8 centimeters. If x represents the side length of the larger square and y represents the side length of the smaller square, which of the following systems of equations could be used to find the dimensions of the squares?
a) x + y + 32, x - y + 8
b) 4x + 4y + 32, 4x - 4y + 8
c) 2x + 2y + 32, 2y - 2x + 8
d) 4x + 2y + 32, 4x - 2y + 8

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RRB Other Question
The amount an appliance repairman charges for each job is represented by the function t + 50h + 35, where h represents the number of hours he spent on the job and t represents the total amount he charges in dollars for the job. The repairman plans to change the amount he charges for each job. The amount he plans to charge is represented by the function t + 50h + 45. What will be the effect of this change on the amount he charges for each job?
a) The total amount he charges for each job will increase by $10.
b) The total amount he charges for each job will decrease by $10.
c) The amount he charges per hour will increase by $10.
d) The amount he charges per hour will decrease by $10. A population of 1500 deer decreases by 1.5% per year. At the end of 10 years, there will be approximately 1290 deer in the population. Which function can be used to determine the number of deer, y, in this population at the end of t years?
A y t = - 1500 1 0 015 ( . )
B y = 1500(0.015)t
C y = 1500(1 + 0.015)t
D y = 1500(1.5