- Letx¼the time it will take to fill the tank if both pipes are open at the
same time.
1
45
xþ
1
60
x¼1 LCD¼ 180
1804
1
x
451
þ
1803
1
x
601
¼ 180 1
4 xþ 3 x¼ 180
7 x¼ 180
71 x
71
¼
180
7
x¼ 25
5
7
or 25:71 minutes
- Letx¼the time it will take to fill the tub if both faucets are open.
1
32
xþ
1
48
x¼1 LCD¼ 96
963
1
x
321
þ
962
1
x
481
¼ 96 1
3 xþ 2 x¼ 96
5 x¼ 96
51 x
51
¼
96
5
x¼ 19 :2 minutes
- Letx¼the time it will take to fill the tank.
1
120
x
1
150
x¼1 LCD¼ 600
6005
1
x
1201
6004
1
x
150
¼ 600 1
5 x 4 x¼ 600
x¼600 minutes
LESSON 17 Solving Work Problems 191