Question

Use the formula

d
=
(
r
−
c
)
t
to find
c
if
d
=
20
,
r
=
13
, and
t
=
4
.

Answer 1

c = 8

Explanation:

d=(r-c) t=?

20=(13-c)4=?

(13-c) * 4/ 4 =20/4

13-c=5

13-c-13=5-13

-c= -8

-c/-1 = -8/-1

answer is c=8