Nina is 10 years younger than deepak. deepak is 3 times as old as nina. which system of equations can be used to find d, deepak's age, and n, nina's age?

a) d = n + 10 d = 3n
b) d = n − 10 d = 3n
c) d = n + 10 n = 3d
d) d = n − 10 n = 3d

The first thing we must do for this case is to define variables.

We have then:

n: Age of Nina

d: Age of Deepak

We now write the system of equations that models the problem.

Nina is 10 years younger than Deepak:

Deepak is 3 times as old as Nina:

Therefore, the system of equations is given by:

A system of equations that are used to find d, Deepak's age, and n, Nina's age is:

A) d = n + 10; d = 3n

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