Idea 9of 23Builds onHalve the price table down to oneBigger is not always cheaper
Compare the same amount
Can you compare two deals without finding the price for one?
Today you'll discover
- how to scale one deal up
- how to compare equal amounts
- when this is quicker
Think first3 bagels for $5.00, or 6 for $9.00
Bagels are 3 for $5.00 or 6 for $9.00. What would 6 cost at the first price?
Decide first, then press Next. Make both offers the same number of items.
A table with two rows, bagels and price. The first column is 3 for $5.00. An arrow marked × 2 above and below steps to a second column, which fills in as 6 for $10.00 and is ringed. Below, beside it, 6 for $9.00, ticked: $1.00 less for 6. The last step asks about 4 muffins for $6.00 or 12 for $16.00.
See the whole ideathe big idea and the key word, in one place
The big idea
Scale one deal up to the same amount as the other, then compare the prices.
Same amount, fair test
3 for $5.00 and 6 for $9.00 are different amounts. Double the first: 6 for $10.00. Now compare $10.00 with $9.00.
- 3 bagels$5.00
- × 2: 6 bagels$10.00
- the other 6$9.00
Easy to get wrongScale both rows by the same number. Doubling the bagels but not the price changes the deal.
Key word
- same amount
- comparing both offers for an equal number of items, such as 6 bagels each
Ready to use it?
- Scale one offer to the same amount as another.
- Decide which offer is the better buy.