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 passenger train takes 2 hours less for a journey of 300 km if it's speed is increased by 5 kilometre per hour from its normal speed. The normal speed is:

Let the normal speed be "S" kilometre/hour

New speed=(S+5) km/ hr

(300/s)-2=300/(s+5)

On solving this equation we get:

S=25 km/hr.

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In a kilometre race A beats B by 100 m. B beat C by 100 m. By how many metres does A beat C in the same race?

While A covers 1000 m distance, B can cover 900 m

While N covers 1000, C can cover 900m

Let's assume that all three of them are running same race . So when B run 900 m. C can run 900 x 9 / 10 = 810

So A can beat C by 190 metres

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A + B means A is the father of B.

A -B means A is the wife of B.

A Ã—B means A is the brother of B.

A Ã·B means A is the daughter of B.

If P Ã·R + S + Q , which of the following is true?

PÃ·R+S+Q means P is the daughter of R who is the father of S who is the father of Q i.e.P is the sister of the father (S) of Q i.e. P is the aunt of Q..

In alphabet series, some alphabets are missing which are given in that order as one of the alternatives below it. Choose the correct alternative.

cab _ a _ c _ bc _ bc _ b _ ab

The series is cab / cab / cab / cab / cab. Thus, the pattern cab is repeated.

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In 1772 Sophia was thrice as jim but in 1775 Sofia was only twice as old as jim was .How many old was Sofia in 1784? question mark

Let's

in 1772.

Sofia age's = x jim age's =y

when Sofia was thrice as jim

x = 3 Y...( 1 )

but after 5 year Sofia was twice.

X + 5 = 2(y + 5)... 2

By substituting equations

x = 25

but after 12 years

in 1784 Sofia was: 37

In a family, there are 6 member A, B, C, D, E and F. A and B are married couple, A being the male member, D is only son of C, who is brother of A. E is the sister of D. B is daughter in law of F, whose husband has died How is F related to A?

A is male and married to B. So, A is husband and B is a wife. C is brother of A. D is a son of C.E, who is sister of D will be daughter of C. B is the daughter in law of F whose husband has died means F ia the mother of A. Clearly, F is mother of A..

In following number series, two terms have been put within brackets. Choose the appropriate option

Choose the appropriate option 4, 7, (9), 10, 13, 15, (16), 19

Choose the appropriate option 4, 7, (9), 10, 13, 15, (16), 19

The correct sequence is is + 3, + 2, + 1, + 3, + 2, + 1, + 3.

Clearly, both the terms 9 and 16 are correct..