Asked by Tanya

A survey conducted with 30 students revealed that:20 has cell phone 16 has tsblets 4 has neither 2x has both...calculate the value of x
Answered by Tanya



20-2x+2x+16-2x+4=40
40-2x=30
40-30=2x
10÷2x=2x÷2x
5=x
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