Question P6 Number × value
Today’s problem — free all day, every step. Every day has one.
A farm keeps chickens and ducks in the ratio of 3 chickens to 2 ducks. Each chicken is worth $6, and each duck is worth $9. If the total value of all the chickens and ducks is $180, how many chickens and ducks are there altogether?
Answer
See all 7 steps
MathBrush is being tested with a few parent groups, and every solution on the site is open to them — one household, all children. If you were given a code, it goes in once and this device remembers it.
I have a code → See a free one like it
65 worked examples are free without a code, two from every pattern. No account, either way.
One batch repeats. Work out one batch, then multiply.
In this one. Fix one repeating batch from the ratio, find its value, then use total value ÷ batch value to find how many batches there are.
Items are described as a fixed group or ratio that repeats, such as tiles following a pattern, snacks sold in a fixed mix, or a rate given per hour or per item.
Children start from the grand total instead of first working out what one batch is worth. In rate questions they also confuse a duration with a clock time.
Worked examples of all 33 patterns and skills, in a booklet you can print.