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Proportional Costs and Budgeting

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Proportional Costs and Budgeting

Use unit rates, ratios, fractions, decimals and percentages to solve each problem. Show your calculations where space is provided.

Proportional costs

1.Pears are priced at $5.60 per kilogram. What will 350 g cost?

2.Chicken breast costs $14.40 per kilogram. Calculate the cost of 300 g, 850 g and 1.5 kg.

3.Which cheese offer has the lower cost per kilogram: 450 g for $5.85 or 1.2 kg for $14.40? State the unit price for each offer.

4.Kūmara costs $4.80 per kilogram. Complete the cost information for 250 g and 900 g, then find the weight that costs $3.60.

Budgets and savings

5.A student has saved $315 towards a $945 outdoor education course. If they put aside $35 each week, how many more weeks will it take to reach the target?

6.A household has a weekly food budget of $240. It allocates 35% to meat and dairy, 30% to fruit and vegetables, 15% to bread and pantry goods, and the remainder to other food. Find the dollar amount for each category.

7.Ari deposits $55 at the end of each month into an account paying 2.4% simple interest per year. Using the total amount deposited over 12 months, calculate the interest earned after one year.

8.A community meal needs 180 g of rice per person for 45 people. Rice costs $3.60 per kilogram. How much will the rice cost?

9.A student earns $160 each week. Make a weekly plan using these percentages: savings 25%, transport 15%, food 30%, and entertainment 10%. Put the remaining amount into other costs. Give each category as both a percentage and a dollar amount.