Forming and solving equations from descriptions

Maths

Forming and solving equations

I think of a number. I times it by 5 and subtract 3. The answer is 17. Form an equation to show this.

What number was I thinking of in Question 1?

Zaki thinks of a number. He multiplies the number by 5. He then adds 3. His answer is 38. What number did Zaki think of?

Yasmin thinks of a number. She multiplies it by 2. She then subtracts 15. She then divides the result by 4. Her answer is 2.5. What number did Yasmin think of?

2 bottles and 2 corks cost £4.20. A bottle is £0.80 more expensive than a cork. How much does a bottle cost?

Which equation can be formed from the diagram?

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