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

In a class of 60 students, a student of weight 45 Kg leaves the class. The average weight of the class is then increased by 200 gms. What is the average weight of the remaining 59 students in the class?

0 Answers   CGI,

After spending 2/3 of his salary on rent and food items and 1/4th of the remaining on transportation, Rajesh has 6000 with him. How much did he pay on transportation?

0 Answers   Wipro,

Shortcut keys in excel : Ctrl + k Ctrl + d Ctrl + y

5 Answers   eClerx,

What is the attitude

0 Answers  

Take this question as challange --> "Candle 'A' takes just four hours to burn it completely and candle 'B' takes 2 hrs. The girth of candle 'A' is just double of candle 'B' with the same height. If Ram lit both the candles in the same time and after how long time the length of Candle 'B' would be just half of candle 'A'?

10 Answers   Indian Bank, State Bank Of India SBI,

which one of the following nutrients is not a structural components of the plant

3 Answers   CDS, IES,

A lady has fine gloves and hats in her closet- 25blue, 7 red, and 9 yellow. The lights are out and it is totally dark. In spite of the darkness, she can make out the difference between a hat and a glove. She takes out an item out of the closet only if she is sure that if it is a glove. How many gloves must she take out to make sure she has a pair of each color?

0 Answers   TCS,

The minute hand of a clock overtakes the hour hand at intervals of 64 minutes of correct time. How much a day does the clock gain or lose?

0 Answers   iNautix, Wipro,

If two cards are taken one after another without replacing from a pack of 52 cards what is the probability for the two cards be queen.

6 Answers   BFL, Cadence,

DATAINTERPRETATION ( 5 QUESTIONS 10 MINUTES ) DIRECTIONS(Q1-5) THESE QUESTIONS ARE BASED ON THE TABLE BELOW BRAND SALES IN JAN’99 PERCENTAGE CHANGE FROM EARLY YEAR K 7.5 12% L 10 3% M 22 -5% N 34 -10% O 16 -20% Q1). Sales of brand M in Jan’98 was what percentage of Jan’99 sales? a) 17.22% b) 24.58% c) 29.58% d) 21.22% e) Cannot be determined Q2). The ratio of sales of N in 1998 to O sales in 1998? a) 43 : 34 b) 13 : 10 c) 23 : 13 d) 31 : 22 e) 54 : 43 Q3). What is the proportion of sales of K, l and M to the total sales of all brands in 1999? a) 36.28% b) 26.19% c) 32.32% d) 12.23% e) 44.13% Q4). By how much have the sales of O and N together fallen in Jan’99 as compared to Jan’98 ? a) 32 b) 19 c) 22 d) 27 e) 21 Q5). Which brand faced the maximum changes in the sales from Jan’98 to Jan’99 ? a) K b) L c) M d) N e) O

1 Answers   Patni, Wipro,

If a bat costs Rs.30 in the year 1999 and Rs.250 in the year 2000.What is the percent increase in price?

0 Answers   3i Infotech,

Next number in the series is 1 , 2 , 4 , 13 , 31 , 112 , ?

1 Answers   Infosys,