NTT Data Ratio and Proportion Quiz -1

Let, no of boys 7x and girls 5x

Now, 5x = 120

=> x = 120/5 = 24

Total no of people = 7x+5x = 12x = 12 * 24 = 288

Suppose there are all the parrots then total no of heads are 340 and total no of legs are 1060. Let us suppose the number of guinea pigs is x and the number of parrots is y.

We know ginipiggu has 4 legs and parrots have 2.

so, 1st equation will be x + y = 340

and, the 2nd equation will be 4x + 2y = 1060.

solving, 1st and 2nd equation we get number of parrots = 150

Total score by Atul and Ankita is 8 units.

So, 8 unit = 800

=> 1 unit = 800/8 = 100

5/2 = 105/x

=>x = (105 x 2)/5 = 42

x:y = 5 : 3 = 10:6

So, x:y:z = 10:6:7

Now, x:z = 10 : 7

Let the number be X then:

X: 212=37:53

Or, X/212= 37/53

Or, X=(37*212)/53

Or,X=148

Hence the required fraction will be 148

The ratio can be expressed as =(1/2) : (2/3) : (3/4) 

= (12/2) : (12 x 2 / 3) : (12 x 3 / 4) 

= 6 : 8 : 9

Third part = (9/23) x 230 = 90

Syrup to water ratio= 2:3

Total ratio= 5

Syrup to water= (2/5)*100= 40

10% of x= 20% of y

=> 10x/100 = 20y/100

Therefore x/y= (20/100)*(100/10)= 2/1

Let the numbers be 6X and 7X

so, (6X-14)/(7X-14)=2/3

= 3(6X-14)= 2(7X- 14)

Therefore, 18X-42= 14X-28

or, 4X= 14

or, X=14/4

Hence the numbers are 21 and 24.5 and their product is 514.5