Quantitative Aptitude - Arithmetic Ability Questions

Total Items = 7
Discounted = 1
Percentage = 1/7 x 100
= 14.285%

area of the field grazed = (22/7) * 14 * 14 = 616 sq feet

Let the salaries of Maneela and Shanthi one year before be M1, S1 & now be M2, S2 respectively.

Then, from the given data,

M1/S1 = 3/4  .....(1)

M1/M2 = 4/5 .....(2)

S1/S2 = 2/3  .....(3)

and M2 + S2 = 4160  .....(4)

Solving all these eqtns, we get M2 = Rs. 1600.

From the above formula i.e (m1 x t1/w1) = (m2 x t2/w2)

so, [(34 x 8 x 9)/(2/5)] = [(M x 6 x 9)/(3/5)]

so, M = 136 men

Number of men to be added to finish the work = 136-34 = 102 men.

A square and a rhombus on the same base are equal in area

Except Granite all other options belong to the group of precious stones.

Distance d = 1200km
let S be the speed

he walks 15 hours a day(i.e 24 - 9)
so totally he walks for 70 x 15 = 1050hrs.

S = 1200/1050 => 120/105 = 24/21 => 8/7kmph

given 1 1/2 of previous speed
so 3/2 * 8/7= 24/14 = 12/7

New speed = 12/7kmph

Now he rests 10 hrs a day that means he walks 14 hrs a day.

time = 840 x 7 /12 => 490 hrs
=> 490/14 = 35 days

So he will take 35 days to cover 840 km.

Area = 12*diagonal1*12diagonal2 = 12*24*10 sq.cm  

12*daigonal1=12*24=12cm 

12*diagonal2=12*10=5cm 

side of a rhombus = (12)² + (5)² = 169      => AB = 13cm