Test on Ratios and Direct Proportion
Master Ratios and Direct Proportion: A Student's Guide
Test: Ratios and Proportions
20 questions
Question 1: The simplest form of the ratio 160 cm to 4 m is 4:10.
A. Ano
B. Ne
Explanation: To find the ratio of 160 cm to 4 m, first convert 4 m to centimeters, which is 400 cm. The ratio is 160:400. This simplifies to 16:40, then to 4:10. However, 4:10 is not the simplest form as it can be further simplified to 2:5. The study materials identify 2:5 as the correct simplest form, and 4:10 as 'Not simplest form'.
Question 2: Based on the provided information, the ratio of money paid by Andrews to MARC is 2.50 : 3.50.
A. Ano
B. Ne
Explanation: The study materials explicitly state: 'Andrews: MARC = 2.50 : 3.50' regarding the money paid.
Question 3: Based on the provided payment information, Andrews and MARC should distribute the 48 chocolates in a ratio of 2.50:3.50.
A. Ano
B. Ne
Explanation: The study material indicates Andrews paid $7.50 and MARC paid $3.50, which would suggest a distribution ratio of 7.50:3.50 based on payments. However, for distributing the chocolates, the material explicitly states the ratio Andrews:MARC = 2.50:3.50, which is not based on the given payment amounts. Therefore, the statement is not correct according to the payment information provided.
Question 4: Is 1:2½ an acceptable final form for a ratio?
A. Ano
B. Ne
Explanation: Ratios cannot use fractions or mixed numbers in their final form, as indicated by 'Can't use fractions' next to '1:2½' in the study materials.
Question 5: Based on the provided ratios, Perfect Pink is considered darker than Rose Pink because Perfect Pink contains a greater proportion of red parts.
A. Ano
B. Ne
Explanation: Perfect Pink has a red:white ratio of 3:4, meaning red makes up 3/7 of the total parts. Rose Pink has a red:white ratio of 2:3, meaning red makes up 2/5 of the total parts. To compare, 3/7 (15/35) is greater than 2/5 (14/35), indicating Perfect Pink contains more parts of red, making it darker.