Answer / naveen

let the three numbers be 2x, 3x ,5x

sum of their squares is to be 4x^2+9x^2+25^2 = 152

then, 38x^2=152

x^2=4
x=2

the sum of the numbers = 2x+3x+5x=2*2+3*2+5*2=4+6+10

=20 (ans)

Answer / jerry

ratio of three numbers is 2:3:5. First add the numbers (as
can be done with any ratio) 2+3+5=10, therefore: let y be
each ratio.

y1/10=x^2/152

y1*(152)/10 = x^2
y1*(15.2)=x^2, the same for the other three numbers in ratio

Now substitute each ratio number:
2*(15.2)=x1^2=30.4, x=(30.4)^1/2 = 5.5136195
to five sigficant digits, now the next numbers in ratio
3*(15.2)=x2=(45.6)^1/2
5*(15.2)=x3=(76)^1/2

X1=5.5136195
X2=6.7527772
X3=8.7177978

What will their sum be?:
X1+X2+X3=5.5136195+6.7527772+8.7177978= 20.9841945

X1^2+X2^2+X3^2=152
also note sum of squares:
(5.5136195)^2+(6.7527772)^2+(8.7177978)^2=152

Also note:
30.4+45.6+76=152 because these are the squares of the above
sum of squares.ex. 30.4 =(5.5136195)^2

also note:
30.4:45.6:76 is the ratio of the X's above
then division by 30.4:
1:1.5:2.5
then multiply by 2:

2:3:5 =>have check answer as requested

Answer / shantha meena

the nos are 2x,3x,5x.

4x^2+9x^2+16x^2=152

38x^2=152

x^2=4

so x=2.

sum=2x+3x+5x
=2*2+3*2+5*2=4+6+10
sum=20.

Answer / raju

good gerry
I appreciate for urs way of thinking

Answer / amit

40

Find the correct meaning of the following phrase: A man of straw

1 Answers   Hexaware,

There are 2 toy cars facing each other at a distance of 500 cm from each other . Each other moves forward by 100 cm at a speed of 50 cm/sec and then moves back by 50 cm at a speed of 25 cm/sec . how long will it take the cars to collide each other ?

15 Answers   CTS,

heat loss from a surface can be minimized by?

0 Answers  

A man while going dowm in a escalator(which is miving down) takes 50 steps to reach down and while going up takes 125 steps. If he goes 5 times faster upwards than downwards. What will be the total no of steps if the escalator werent moving.

13 Answers   Cadence, CSC, CTS,

A worker pay Rs20 a day ,he works 1,1/3,2/3,1/8,3/4 in a week.What is the total amount paid to the worker.

0 Answers   CMC,

A and b can do a piece of work in 15 and 10 days. A and b work on it for sometime and then a leaves b completes the job in 5 days. For how long did a work.

0 Answers   Caritor Solutions,

Mr rahul spends 20% for house, 30 % on children, 10% on conveyance, 30% on education, 20% on other expenditure and Rs 5150.50 as savings. How much is Rahul's total salary?

7 Answers   State Bank Of India SBI,

A clock with the hours round the face in Roman block numbers, as illustrated in the sketch fell down and the dial broke into four parts....

0 Answers   Infosys,

If the cost of an article is x , first discount given is y% of cost, second discount given is z% of cost . The selling price of x is

1 Answers   TATA,

out of three numbers first is twice the second and is half of third.if the average of the 3 number is 56 the three no. in order are

3 Answers  

The ratio of the present ages of Suman and Renu is 5 : 7 respectively. Four years hence the ratio will become 3 : 4 respectively. What is the present age of Renu in years? (a) 28 (b) 24 (c) 20 (d) 21 (e) None of these

5 Answers   iGate,

WHO WAS THE WINNER IN THE WOMEN'S U.S OPEN.2012. (A)VENUS WILLIAMS (B) SVETLANA KUZNETSOVA (C) PETRA KVITOVA (D)SERENA WILLIAMS

1 Answers