The fuel consumption of a plow tractor, per working time, is 18 liters per hour. This same consumption, per area worked, is 15 liters per hectare. We can estimate that, in 10 hours of work, this tractor will be able to plow about:

A clothing manufacturer needs 12 seamstresses working for three months to meet the demand for shirts requested by a retailer. Even before the seamstresses start working, due to an urgency issue, the retailer demanded that the order be delivered in two months. To meet this new deadline, the manufacturer will have to adjust the number of seamstresses. Consider that all seamstresses who will perform this work produce the same amount of shirts per unit of time. How many seamstresses will be necessary to perform the work within the new deadline requested by the retailer?

To solve this question, we use a simple and direct rule of three. Follow the step by step guide: 1. List the provided information: - 12 seamstresses work for 3 months. - The deadline was reduced to 2 months. - We need to find the number of seamstresses required to meet the new deadline. 2. Organize the information in a table: Seamstresses | Time (months) ---------------------------- 12 | 3 x | 2 3. Establish the direct proportionality relationship between the quantities. If the time decreases, the number of seamstresses must increase. 4. Apply the rule of three: 12 seamstresses - 3 months x seamstresses - 2 months 5. Find the unknown "x": x = 12 seamstresses * 2 months / 3 months 6. Simplify the expression: x = 24 / 3 7. Find the value of x: x = 18 Therefore, 18 seamstresses will be necessary to meet the new deadline of 2 months. The correct answer is "18".

The value of the expression $$\frac{\frac{37}{3} \times(0.243243243 \ldots \div 1.8)+0.656565 \ldots \times 6.6}{\frac{11}{8} \times(1.353535 \ldots-0.383838 \ldots)}$$ is

A clothing salesman receives a 5% commission on the total sales made in his store. If last month he sold a total of R$ 20,000.00 in products, what was the amount of the commission he received? Use direct proportionality.

In a math competition, students need to calculate the amount of material needed to decorate a hallway. If 4 rolls of 10 meters wallpaper are enough to cover 20 meters of wall, how many rolls will be needed to cover a hallway that is 50 meters long with the same wall height?

Question bank: Rule of 3: Direct

Access these and thousands of other questions, create assignments, projects, and lesson plans in minutes.

Why are Teachy's Question Banks the most complete available?

Complete platform:

Custom filters:

Focus on students:

Time for what matters:

Access anywhere: