Question

Alex has a pile of 2p coins. She swapped exactly half of them for the same number of 10p coins.
Now she has £4.20
How much money did alex have initially?

Answer 1

Answer:

£8.4

Step-by-step explanation:

Since she swapped half and now has £4.20, then multiply that by 2

                                                     4.20 × 2 = 8.4

Alex initially had £8.4

Answer 2

The initial amount of Alex's 2p coins is £8.40

Let the initial worth of 2p coins = y

• Half of y = y/2
• The value of y/2 = £4.20

• The amount of money Alex had initially = y

We can then solve for the worth of y, which is the titla amount Alex had initially ;

• y/2 = £4.20
• Multiply bith sides by 2
• (y/2)×2 = £4.20 × 2
• y = £8.40

Therefore, the amount of money Alex had initially is £8.40

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