CleverSphere

Economics practice problems with worked answers: micro and macro

Market equilibrium, elasticities, households and costs, the multiplier and IS-LM: you do the maths yourself and type in the result. Five problems, new every day, with worked solutions and the typical exam mistake. Free and without an account.

Keep practising for free, with your progress

The basics without a daily limit in a free account, plus one exam-level task a day. Every level, the exam mode and the AI tutor from €4.99 once or with Plus.

Task 1 of 5Cost curves

Task

A firm has the cost function C(x) = 528 + 13x + 3x² (C in €). At an output of x = 11, find marginal cost, average total cost and average variable cost.

Marginal cost MC in €

€

Average total cost ATC in €

€

Average variable cost AVC in €

€

Numbers like 12.5 or 1,250; elasticities with their sign (−0.75); percentages as a number (12.5). Round to 2 decimal places.

Topics with formulas and practiceMarket equilibrium · Shifts · Price ceilings and floors · Consumer and producer surplus …
How the trainer works

Work it out, don’t guess

Equilibrium price, elasticity, tax revenue: you type the number, 12.5 or 1,250, plus classifications such as elastic or inferior.

With worked solutions

After each problem you see the solution step by step and the typical mistake that costs marks in the exam.

Always new problems

Every problem is generated with new numbers, without AI and always computed correctly. You practise the method, not memorising answers.