This document contains a 15 question quiz on math concepts like proportions, ratios, rates, similar triangles, and unit conversions. The questions require setting up and solving proportions, finding unit rates, calculating rates per hour, and using similar triangles to determine unknown lengths.

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