20 women can do a work in 15 days and 15 men can complete a work in 12 days. What is the ratio between the capacity of men and women?

(20*15) women can do a work in 1 day.

So women 1 day =1/300

(15*12) men can do a work in 1 day

So men 1 day work=1/180

So, required ratio=(1/300)/(1/180)

=(1/5)/(1/3)

=3/5

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The present ages of three Ladies are in proportion 4:7:9. Eight years ago, the sum of their ages eight years ago(in years).

Let their present ages be 4x,7x and 9x years respectively.

Then,(4x-8)+(7x-8)+(9x-8)=76

20x=100

x=5

Their present ages are 12 years ,27 years and 37 years respectively.

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The ages of two friends Julie is twice older than Katie. However if the age of Julie before 20 years and that of Katie after 20 years then Katie age is twice then Julie. What is the age of julie?

let, Julie age = A and Katie age=B

given that

A/B = 2 / 1

A=2B

A - 2B = 0......equation 1

and also given that, A - 20 / B+ 20 = 1/2

2A -40 = B + 20

2A-B= 60.....equation 2

by solving watch equation

A = 40

so, julie is 40 years old

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Shobha is the name of Ashish. Ashish,s mother is Priya. Kamal is Priya's mother. Kamal,s husband is Hari. Krishna is the mother in- law of Hari. How is Shobha related to Hari?

Sobha is the niece of Ashish means Ashish is the uncle of shobha. Now ,Priya is Ashish,s mother. So priya is the grandmother of shobha. Heri is Priya's father. So shohha is the great Grand daughter of Hari..

In following question, a number series is given with one term missing.

Choose correct alternative that will same pattern and fill in the blank spaces.

7, 6, 10 ,27, 104, ...

Choose correct alternative that will same pattern and fill in the blank spaces.

7, 6, 10 ,27, 104, ...

Here,

7 * 1 - 1 = 6

6 * 2 - 2 = 10

10 * 3 - 3 = 27

27 * 4 - 4 = 104

So 104 * 5 - 5 = 515.