Chapter 13 – Direct and Inverse Proportions
1. What will be the unit digit of the squares of the following numbers? i. 81 ii. 272 iii. 799 iv. 3853 v. 1234 vi. 26387 vii. 52698 viii. 99880 ix. 12796 x. 55555
12
Oct
1. What will be the unit digit of the squares of the following numbers? i. 81 ii. 272 iii. 799 iv. 3853 v. 1234 vi. 26387 vii. 52698 viii. 99880 ix. 12796 x. 55555 1. What will be the unit digit of the squares of the following numbers? i. 81 ii. 272 iii. 799 iv. [...]
6. In a model of a ship, the mast is 9 cm high, while the mast of the actual ship is 12 m high. If the length if the ship is 28 m, how long is the model ship?
12
Oct
6. In a model of a ship, the mast is 9 cm high, while the mast of the actual ship is 12 m high. If the length if the ship is 28 m, how long is the model ship? 6. In a model of a ship how long is the model ship? the mast is [...]
5. A photograph of a bacteria enlarged 50,000 times attains a length of 5 cm as shown in the diagram. What is the actual length of the bacteria? If the photograph is enlarged 20,000 times only, what would be its enlarged length?
12
Oct
5. A photograph of a bacteria enlarged 50,000 times attains a length of 5 cm as shown in the diagram. What is the actual length of the bacteria? If the photograph is enlarged 20,000 times only, what would be its enlarged length? 000 times attains a length of 5 cm as shown in the diagram. [...]
4. A machine in a soft drink factory fills 840 bottles in six hours. How many bottles will it fill in five hours?
12
Oct
4. A machine in a soft drink factory fills 840 bottles in six hours. How many bottles will it fill in five hours? 4. A machine in a soft drink factory fills 840 bottles in six hours. How many bottles will it fill in five hours? October 12, 2020 Category: Chapter 13 - Direct and [...]
3. In Question 2 above, if 1 part of a red pigment requires 75 mL of base, how much red pigment should we mix with 1800 mL of base?
12
Oct
3. In Question 2 above, if 1 part of a red pigment requires 75 mL of base, how much red pigment should we mix with 1800 mL of base? 3. In Question 2 above how much red pigment should we mix with 1800 mL of base? if 1 part of a red pigment requires 75 [...]
3. In Question 2 above, if 1 part of a red pigment requires 75 mL of base, how much red pigment should we mix with 1800 mL of base?
12
Oct
3. In Question 2 above, if 1 part of a red pigment requires 75 mL of base, how much red pigment should we mix with 1800 mL of base? 3. In Question 2 above how much red pigment should we mix with 1800 mL of base? if 1 part of a red pigment requires 75 [...]
2. A mixture of paint is prepared by mixing 1 part of red pigments with 8 parts of base. In the following table, find the parts of base that need to be added.
12
Oct
2. A mixture of paint is prepared by mixing 1 part of red pigments with 8 parts of base. In the following table, find the parts of base that need to be added. 2. A mixture of paint is prepared by mixing 1 part of red pigments with 8 parts of base. In the following [...]
1.Following are the car parking charges near a railway station upto: 4 hours Rs.60 8 hours Rs.100 12 hours Rs.140 24 hours Rs.180 Check if the parking charges are in direct proportion to the parking time.
12
Oct
1.Following are the car parking charges near a railway station upto: 4 hours Rs.60 8 hours Rs.100 12 hours Rs.140 24 hours Rs.180 Check if the parking charges are in direct proportion to the parking time. 7. Simplify. (ii) 3^5 x 10^5 x 125/ 5^-7 x 6^-5 October 12, 2020 Category: Chapter 13 - Direct [...]