Question

James looks in his TV cabinet and finds
some old Beta and VHS tapes. He has
17 tapes in all. He finds that he has three
more Beta tapes than VHS tapes. How
many of each type does he have?
PLSSS HELPP

Answer 1

The number of old beta and VHS tapes is 10 and 7 respectively.

Solving Simultaneous equations

Let the number of Beta and VHS tapes be x and y respectively;

Hence;

• x + y = 17

• x - y = 3

Subtract the equations to obtain y;

• 2y = 14

y = 7

Substitute y= 7 into equation 1 to obtain x;

• x + 7 = 17

• x = 17-7

x = 10.

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