Question

13. पित के रस में कोई पाचक एंजाइम नहीं होता है लेकिन फिर भी पाचन की प्रक्रिया में वह
महत्वपूर्ण भूमिका निभाता है। इस बात को सही ठहराइए।
(2.)
अथवा​

Answer 1

Answer:

A mother is 32 years older than her son. In 4 years the mother's age will be 8 years more than

twice that of her son. Find their present ages.

Son's

20 yearsAnswer:

Mother's present age:60 years.

Son's present age:28 years.

Let mother's present age be "X" years.

Let son's present age be "Y" years.

First equation is:

X =Y +32...............(i)

Second equation is:

X+4=2Y+8

By substituting the value of first equation here we get,

Y+32+4=2Y+8

or, Y+36=2Y+8

or, Y-2Y=8-36

or, -Y=-28

So,Y =28

Son's present age is:28

years .

Then by substituting the value of Y into the 1st equation we get,

X=28+32

So,X =60

So,Mother's present age is:

60 years.

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