Question

papakiqueen




The present ages of A and B are in the ratio 7:5. Ten years later, their ages will be in the ratio 9:7. Find their present ages.​​

Answer 1

Answer:

Biological nitrogen fixation (BNF) is the term used for a process in which ... of plants is able to obtain N this way, with the help of soil microorganisms.

Answer 2

a is 23 year

b is 13 year

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