Question

Two books combined is $45 more than a desk. If the two books and desk is $145, what is the cost of one book.
@ganeshie8

Answer 1

well let the dexk cost x, then the 2 books cost x + 45

so you have x + x + 45 = 145

solve for x

then since the books cost x + 45

substitute you answer for x and then divide the total by 2 to get the cost of 1 book

Answer 2

Can you please explain it to me more? I don't understand this too much. @campbell_st

Answer 3

@jdoe0001 can you plz help?

Answer 4

hmm.. looking

Answer 5

well, I see it this way
since both books seem to cost the same amount

b = book
d = desk

so b + b = 2 books

2 books combined, cost whatever the desk costs plus $45

\(\bf b + b = d + 45\)

if the 2 books and desk all together cost $145

\(\bf b + b + d = 145\)

how much is 1 book?

\(\bf b + b = d + 45 \implies 2b = d+45 \implies 2b-45 = d\\\quad \\
b + b + d = 145 \implies 2b +d = 145 \implies d = 145-2b\\ \quad \\ \quad \\
2b-45 = d\qquad and\qquad d = 145-2b\\\quad \\
2b-45 = 145-2b\)

Answer 6

if you solve for "b", that'd be the price of a book

Answer 7

Can you help to solve for because I am not good at factoring.

Answer 8

for b I meant

Answer 9

hmmmm, solving for "b" is just plain simplifying
the exercise assumes you should know how to simplify it

Answer 10

thx

Answer 11

yw

Answer 12

can u help me with one more?

Answer 13

@jdoe0001

Answer 14

I can try

Answer 15

I will post a new one and mention u. thx