*a) The reason equals 10. Determine the ratio *.

*b) The distance between two cities on a 1: 2000 scale map is 8.5 cm. What is the real distance between these two cities?*

*c) Peter's age is 30 years old and Josefa's age is 45 years old. What is the reason between the ages of Peter and Josefa?*

*d) A box of chocolate has 250g net weight and 300g gross weight. What is the ratio of net weight to gross weight?*

*e) The ratio between the length of the shadow and the height of a building is . If the building is 12 m high, how long is the shadow?*

*f) Pedrinho solved 20 math problems and hit 18. Cláudia solved 30 problems and hit 24. Who presented the best performance?*

*g) The ratio between the amount I spend and the amount I receive as a salary per month is . What remains I put in savings account. If this month my salary was $ 840.00, what amount will I apply in the savings account?*

*h) A soccer team obtained, during 2010, 26 wins, 15 draws and 11 losses. What is the ratio of the number of wins to the total number of matches played?*

*i) During the 2010 Brazilian Championship, one team had 12 penalties in their favor. Knowing that the ratio of the number of hits to the total of penalties was , how many penalties were converted into goal by this team?*

*j) A reservoir with a capacity of 8m³ of water has 2000L of water. What is the ratio of the amount of water in the reservoir to the total reservoir capacity? (Remember that 1dm³ = 1L).*