Question

MPSC Top question......
दोन झाडे आसतात .....
दोन्ही झाडावरती काहि पक्षी बसलेले आसतात......
एका झाडावरती बसलेले पक्षी दुसर् या झाडावरील पक्षाना बोलतात कि तुमच्यातिल एक पक्षी आम्हाला द्या म्हनजे आम्हि तुमच्या दुप्पट होईल .....
तर दुसर् या झाडावरील पक्षी बोलतात कि तुमच्यातला एक पक्षी आम्हाला द्या म्हनजे आम्हि आणि तुम्हि समान होवु......
तर दोन्हि झाडावरति किति पक्षी आहेत???????
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Answer 1

There are two trees in a garden, tree A and tree B and on both trees are some birds.
The birds of tree A say to the birds of tree B that if one you comes to our tree, then our population will be the double of yours.
Then the birds of tree B tell the birds of tree A that if one of you comes here then our population will be equal to that of yours.
How many birds are in each tree?

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let a = original number of birds in tree A
leg b = original number of birds in tree B
:
"The birds of tree A say to the birds of tree B that if one you comes to our tree, then our population will be the double of yours."
a + 1 = 2(b - 1)
a + 1 = 2b - 2
a = 2b - 2 - 1
a = 2b - 3

"Then the birds of tree B tell the birds of tree A that if one of you comes here then our population will be equal to that of yours."
a - 1 = b + 1
a = b + 1 + 1
a = b + 2
replace a with (2b-3), from the 1st statement
2b - 3 = b + 2
2b - b = 2 + 3
b = 5 birds on tree B, originally
then
a = 5 + 2
a = 7 birds on tree A
:
:
Check these solutions in the equation a = 2b - 3
7 = 2(5) - 3
7 = 10 - 3

So, there are are 7 birds