1. Tech I - Chapter 6 Quiz
1. How many parts are produced per hour if 1630 parts are made in 6 hours. Round to the nearest integer.
a. 325 parts/h b. 272 parts/h c. 237 parts/h d. 291 parts/h
2. A 16-oz bottle of water costs $1.44. What is the cost per ounce?
a. $0.09/oz b. $0.18/oz c. $0.90/oz d. $1.78/oz
3. How many cars were manufactured per hour if 1782 cars are made in 4 hours. Round to the nearest integer.
a. 446 cars/h b. 461 cars/h c. 494 cars/h d. 434 cars/h
Solve the proportion.
4.
a. 55 b. 2.2 c. 110 d. 1.8
5.
a. –7.9 b. –10.3 c. –63 d. –6.2
6.
a. 9 b. 5 c. 21 d. 18
2 2 2
7.
a. –170 b. –2.4 c. –42.5 d. –6.8
8.
a. −5 b. 4 c. 10 d. 12
9.
a. b. c. d.
19/4
10.

2. a. 5.8 b. 4.3 c. 33.6 d. 168
The pair of figures is similar. Find x. Round to the nearest tenth if necessary.
25 cm
17 cm
11.
x 18 cm
Drawing not to scale
a. 12.2 cm b. 19.1 cm c. 26.5 cm d. 26 cm
11 ft
12. x
8 ft 3 ft
Drawing not to scale
a. 4.1 ft b. 2.2 ft c. 0.3 ft d. 2.7 ft
34 cm
12 cm
13.
x 10 cm
Drawing not to scale
a. 3.5 cm b. 28.3 cm c. 32 cm d. 17.8 cm

3. 15. A tree casts a shadow 10 ft long. A boy standing next to the tree casts a shadow 2.5 ft. long. The triangle shown for
the tree and its shadow is similar to the triangle shown for the boy and his shadow. If the boy is 5 ft. tall, how tall is
the tree?
Drawing not to scale
a. 18 ft b. 12.5 ft c. 15 ft d. 20 ft