AFCAT I 23 Jan 2025 Shift 1 Paper

Percentage Composition = Percentage × Solution
Calculation:
Litres of milk in the solution =63%×49
Litres of milk in the solution =‌

63

100

×49=30‌

87

100

litres
Litres of water in the solution =49−30‌

87

100

=‌

4900−3087

100

=18‌

13

100

litres
Now, a solution having 70% milk and 30% water in it,
⇒ If 30% water =18‌

13

100

litres
Then 1% water contains =‌

1813

100×30

=‌

1813

3000

litres
Then 70% of milk contains =‌

1813

3000

×70=‌

126910

3000

litres
⇒ Amount of milk required to add =‌

126910

3000

−‌

3087

100

=‌

126910−92610

3000

⇒ Amount of milk required to add =‌

34300

3000

=11‌

13

30

litres