Question 195649
b = bart
c = betty


---> *[Tex \LARGE 399.99 \le b+c \le 579.99]



*[Tex \LARGE 399.99 \le b+(b+100) \le 579.99]



*[Tex \LARGE 399.99 \le 2b+100 \le 579.99]



*[Tex \LARGE 399.99 - 100 \le 2b \le 579.99 - 100]



*[Tex \LARGE 299.99 \le 2b \le 479.99]



*[Tex \LARGE \frac{299.99}{2} \le b \le \frac{479.99}{2}]



*[Tex \LARGE 149.995 \le b \le 239.995]



*[Tex \LARGE 150 \le b \le 240]



Ans: Bart will spend at least $150 but at most $240