RPF 11 Jan 2019

Since, there are an equal number of male and female employees in the company, and also the average productivity is 77 calls per day which is equal to the number of calls attended by the males.

Thus, number of calls attended per day by a female employee will also equal to = 77

=> Ans - (A)

Let usual speed = $$10$$ m/min and usual time taken = $$t$$ min

=> New speed = $$9$$ m/min and new time = $$(t+25)$$ min

Also, speed is inversely proportional to time.

=> $$\frac{10}{9}=\frac{t+25}{t}$$

=> $$10t=9t+225$$

=> $$10t-9t=t=225$$

$$\therefore$$ Usual time taken = 225 minutes

=> Ans - (A)

Let width of floor = $$x$$ m

=> Length = $$\frac{125}{100}\times x=1.25x$$ m

Area = $$x\times1.25x=180$$

=> $$x^2=\frac{180}{1.25}=144$$

=> $$x=\sqrt{144}=12$$

$$\therefore$$ Sum of length and width = $$x+1.25x=2.25x$$

= $$2.25\times12=27$$ 

=> Ans - (B)

% of non defective bulbs = $$100-19=81\%\equiv2025$$

=> Number of defective products = $$19\%\equiv\frac{2025}{81}\times19$$

= $$25\times19=475$$

=> Ans - (A)

Let side of cube be $$a$$ cm

=> Diagonal = $$\sqrt{a^2+a^2+a^2}=45\sqrt3$$

=> $$\sqrt3a=45\sqrt3$$

=> $$a=45$$ cm

Let height of cuboid = $$h$$ cm, length, $$l=45$$ cm and breadth, $$b=22.5$$ cm

According to ques, Volume of cuboid = Volume of cube

=> $$lbh=a^3$$

=> $$45\times22.5\times h=(45)^3$$

=> $$h=\frac{45\times45}{22.5}=90$$ cm

=> Ans - (C)

If total salary is 100%, then % salary remaining after the donations = $$100-(13+12+14+16)=45\%$$

According to ques, $$45\%\equiv Rs.$$ $$19,125$$

Thus, amount donated to company for the blind = $$13\%\equiv\frac{19125}{45}\times13$$

= $$425\times13=Rs.$$ $$5,525$$

=> Ans - (D)

Let the three numbers respectively be $$2x,3x$$ and $$4x$$

Sum = $$2x+3x+4x=9x=225$$

=> $$x=\frac{225}{9}=25$$

$$\therefore$$ Second number = $$3\times25=75$$

=> Ans - (C)

Let amount received by Ankit, Babu, Christo, and David respectively be $$5x,4x,3x$$ and $$2x$$

According to ques, => $$3x-2x=x=115$$

$$\therefore$$ Amount receive by Babu = $$4\times115=Rs.$$ $$460$$

=> Ans - (B)