Cost of Saving

Worked examples / Bets

Scratch card

A $5 card where 1 in 4 wins, about $12 on average.

Not worth it on average

Expect to lose $2 of the $5.

You pay$5for certain
You get back$3on average
Put in your own numbers

This is a worked example with illustrative figures, not data about any real person or company. Change any of them in the calculator and the answer changes with them.

How this answer was worked out

You pay1 x $5 = $5
Average back per go1 in 4 of $12 = $3.00
Average back in all$3
Back per $1 paid$0.60
Expected loss$2

Every formula is written out on the formulas page.

What the calculator asks you

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