With x loaves and y cakes, which inequality…

With x loaves and y cakes, which inequality states the baker's flour limit?

Question 40

EasyOriginal question

A baker has 18 kg of flour for the day. A loaf of bread uses 0.4 kg of flour and a cake uses 0.6 kg. She must bake at least 15 loaves for her regular customers.

With $x$ loaves and $y$ cakes, which inequality states the baker's flour limit?

0.4x + 0.6y \le 18

Correct answerYour answer

0.4x + 0.6y \ge 18

Correct answerYour answer

0.6x + 0.4y \le 18

Correct answerYour answer

x + y \le 18

Correct answerYour answer

Show the answer and explanation

CorrectNot quiteAnswer A

Correct answer: A

Flour used $= 0.4x + 0.6y$ kg.
It cannot exceed 18 kg: $0.4x + 0.6y \le 18$ .

Worth noting

$0.6x + 0.4y$ swaps the amounts for bread and cake.

Concept: A resource limit as an inequality
Typical timeTypical: 90 s
Your timeYours: —

The rule this testsSolving inequations

Practise this chapter →

Ten questions from Numerical Inequalities, at your own pace.

Practise this chapter →

Ten questions from Numerical Inequalities, at your own pace.

With x loaves and y cakes, which inequality states the baker's flour limit?

Question 40

Explanation