71. An article whose initial cost is Rs 400 is subjected for discounts of 25%, 15%, and 40%. What is the amount the customer have to pay?
Answer:
Explanation:0.75*0.85*.60*400=153
Workspace
HCL Technologies
72. Please find the solution.In an isosceles triangle,the sides are13cm,13cm,10cm which is inscribed inside a circle. Find the radius of the circle.
Answer:
Explanation:sides are, a=13,b=13,c=10
s=(a+b+c)/2 =(13+13+10)/2=18
area of triangle= [s(s-a)(s-b)(s-c)]^1/2= [18(18-13)(18-13)(18-10)]^1/2 = (18*5*5*8)^1/2 =60 cm^2
R be the radius then it will be circumradius of triangle
R=(a*b*c)/(4*area of triangle)
R=(13*13*10)/(4*60)=7.04cm
Workspace
HCL Technologies
73. In a company ones salary increases 6/5 times in every year. After 4 year of joining average salary is 1342. Then what's the starting salary of the company?
Answer:
Explanation:Let x be initial salary.
After one year it becomes 6/5*x
4 months salary is
= x+6/5x +6/5*6/5x+ 6/5*6/5*6/5x + 6/5*6/5*6/5*6/5x =1342*4
By solving we get x =1000
Workspace
HCL Technologies Broadcom Ltd
74. What is the binary rep of 0.6875?
Answer:
Explanation:0.6875*2=1.375-1
0.375*2=0.75-0
0.75*2=1.50-1
0.50*2=1.0--1
Hence, 0.6875= .1011
Workspace
HCL Technologies
75. Find the altitude of a parallelogram whose sides are 5400cm and the base is 45cm
Answer:
Explanation:area of parallelogram A=b*h
h=A/b
h=5400/45
h=120
Workspace
HCL Technologies
76. A bag contains 1 rupee 2 rupees and 5 rupees coins in the ratio 4:8:5. The Total Amount was Rs.90. The number of 5 rupee coin was?
Answer:
Explanation:et the 1rupee 2rupee and 5 rupee coins be in the ratio 4x,8x,5x
According to question,4x*1+8x*2+5x*5=90
4x+16x+25x=90
45x=90=>x=2
thus the no 5 rupee coin is=5*2 = 10
Workspace
HCL Technologies
77. The age of a and b are in the ratio 4:5 and of b and c in the ratio 3:2. The youngest of three is?
Answer:
Explanation:a:b = 4:5, 3*(a:b) = 12:15
b:c = 3:2, 5*(b:c) = 15:10
a:b:c =12:15:10
Therefore youngest is c.
Workspace
HCL Technologies
78. The average age of a committee of eight members is 40 years. A member, aged 55 years retired and his place was taken by another member aged 39 years. The average age of the present committee is :
Answer:
Explanation:Total average of committee=8*40=320
Member's age = 55
He retired =320-55
This is 7 member committee =265
His place taken by one person of Age =39
commttiee=7+1=8,
So, (265+39)/8=38
New average age =38 years
Workspace
HCL Technologies
79. A pizza which is thin is cut into 'x' pieces by 4 straight lines then the lowest possible value of x is?
Answer:
Explanation:4 parallel lines will give minimum number of pieces.
Workspace
Wipro NLTH HCL Technologies
80. if x+y+z=9 and both y and z are positive integers greater than zero, then the maximum value x can take is?
Answer:
Explanation:If y=z=1, then, x+y+z=9; x+1+1=9;
So, x=7
Workspace
HCL Technologies Broadcom Ltd
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