Ruby was going to order 1 for her son, 1 for her daughter and 1 to share with her husband. So she needed to order 1+1+1 = <<1+1+1=3>>3 pizzas
Each pizza cost $10 and she was ordering 3 so that comes to 10*3 = $<<10*3=30.00>>30.00
She needed to order pepperoni, sausage, black olive and mushroom, which came to 4 toppings at $1.00 each so 4*1 = $<<4*1=4.00>>4.00 extra for toppings
The pizzas cost $30 and $4 for the toppings so the total costs of the pizzas came to 30+4 = $<<30+4=34.00>>34.00
She also had to add a $5.00 tip to her current order total of $34.00 so 5+34.00 = $<<5+34=39.00>>39.00 for the total order
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