Given :
Cost of each ball , $3.
Cost of each bat , $35 .
Total money spend , $131 .
She buys twice as many balls as bats.
Tax , $8 .
To Find :
The number of bats she buys .
Solution :
Let , x represent the number of bats she buys.
So , number of balls she buys is 2x .
![35x+3(2x)+8=131\\\\35x+6x=123\\\\41x=123\\\\x=3](https://tex.z-dn.net/?f=35x%2B3%282x%29%2B8%3D131%5C%5C%5C%5C35x%2B6x%3D123%5C%5C%5C%5C41x%3D123%5C%5C%5C%5Cx%3D3)
Therefore , number of bats she buys is 3 .
Hence , this is the required solution .