James is 24 years old.
Let John's age now is J.
Let james's age now is A.
From the question, we have
John is 3/4 the age of james.
J=3/4*A
J=3A/4
Three years ago, John was 5/7 the age of james.
J-3=5/7*(A-3)
J-3=(5A-15)/7
J=(5A-15)/7+3
3A/4=(5A-15)/7+3
21A=4(5A-15)+84
21A=20A-60+84
A=24
James is 24 years old.
Multiplication:
Finding the product of two or more numbers in mathematics is done by multiplying the numbers. It is one of the fundamental operations in mathematics that we perform on a daily basis. Multiplication tables are the main use that is obvious. In mathematics, the repeated addition of one number in relation to another is represented by the multiplication of two numbers. These figures can be fractions, integers, whole numbers, natural numbers, etc. When m is multiplied by n, either m is added to itself 'n' times or the other way around.
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