Direct and Inverse Proportion
1) The scale of a map is based on the concept of _______. (Direct or Inverse Proportion)
2) The area of cultivated land varies _______ with the crops harvested. (Directly or Inversely)
3) The population of a country varies _______ with the area of land per person. (Directly or Inversely)
4) The time taken by workers to complete a job varies _______ with the number of workers. (Directly or Inversely)
Answers
Answer:
Step-by-step explanation:
Followings are the car parking charges near a railway station opto Check if the parking charges are in direct proportion to the parking time.
Sol. Since ∴ The parking charges are not in direct proportion to the parking time.
2. A mixture of paint is prepared by mixing 1 pan of red pigments with 8 parts of base. In the following table, find the parts of base that need to be added. Sol. It is given that parts of red pigment, say x and parts of base, say y are in direct proportion. Therefore, the ratio of the correspondng values of x and y remain constant. So, x and y are in direct variation with the constant of variation equal to . This means that x is of y and y is eight times of x. Thus, the required entries are
3. 3. In question 2 above, if 1 part of a red pigment requires 75 ml. of base, hew much red pigment should we mix with 1800 mL of be.Sol. Let the parts of red pigmen. required to mix with 1800 ml. of base be x. The given infonrutlon in the form of a table is as follows. The parts of red pigment and the parts of base are in direct proportion. Therefore, we obtain Thus, 24 parts of red pigments shook! be mixed with 1800 mL of base.
4. A machine in a soft drink factory fills 840 bottles in six hours. How many bottles will it fill in five hours?Sol. Let the number of bottles filled by the machine in five hours be x. The given information in the form of a table is as follows.
The number of bottles and the time taken to fill
Answer:
Direct Proportion
Step-by-step explanation:
please mark as brainliest