Bobs bill for dinner at surefire steak house was $45. in addition, he paid 5% of the bill in tax, and he left a tip for 15% of the bill (before tax) . how much did bob spend spend for tax and tip combined? how much did bob spend in all?

He spend $36 in all and $9 for tax and tip.

Step-by-step explanation:

Since we have given that

Amount of bill for dinner = $45

Rate of tax = 5%

Rate of tip = 15%

Amount of tax would be

Amount of tip would be

total amount he spend for tax and tip combined is given by

Amount he spend in all is given by

Hence, he spend $36 in all and $9 for tax and tip.