math (1 Viewer)

[sukhmani]

hi
i know the answer for this ques but can someone tell me how to solve it.
sue is standing in a queue in a store. she noticed that there are 3 more people infront of her than behind her. there were total of 16 vin that queue.
whats her position?:wave:

 

[randomnessss]

Let the number of people behind her equal x and the people in front of her equal x+3.

no. of people in front + sue + no. of people in front = 16
x+1+x+3 = 16
2x = 16-4
2x = 12
x = 6

People in front = x + 3
= 6 + 3
= 9
Therefore, Sue is 10th in position.