Question

C bought 2 pens, a book and a bag from a bookstore. The book cost three times as much as the pen, and the bag cost $15 more than the book. She spent $175 altogether. What was the cost of the book?

Answer 1

Answer: Let penz cost be X,

Total cost=175,

》3(X)+(X+15)+2×X=175

》3X+X+15+2X=175

》6X=160

》X=$40. That’s pen’s cost.

Therefore,cost of book= 3×40

=$120.

Step-by-step explanation:

Answer 2

Answer:

$68 58 = book ($)

Step-by-step explanation:

bk     bg          p                                                                                                       30   (30+15)   10                                                                                                       60    75         20   = 155 ($)  175-155 = 20      20/7 =   2.867  *3 each part      + 8.58 + 8 .58 + 2.86                                                                                             68.58($)  83.58 ($) and 22.86 ($)  plug in 22.86 * 3 =  68.58      proof 68.58+15 = 83.58