A school canteen makes 18 kg of kitchen waste on each of 22 school days in a month…
Contributed by StemPy LabTry it on paper first. A hint, the key idea and the worked solution are here when you need them.
A school canteen makes kg of kitchen waste on each of school days in a month. It all goes into a compost pit, where about % of the mass remains as compost. How much kitchen waste goes in, and how much compost comes out? Give the compost to one decimal place.
Need a reminder? The key ideaShow
Reduce, reuse and recycle, in that order. Sort wet waste (green bin, for compost) from dry waste (blue bin, for recycling). Landfills fill up, and burning releases harmful gases. Kulhads for every railway cup would use up fertile topsoil.
The worked solution
Have you tried it?
Work it out on paper first. It is fine to get stuck or make a mistake: that is how we learn. When you are ready, go through the solution one step at a time, and check each step against your own.
Step 1. Waste. kg.
Step 2. Compost. kg.
Answer: kg of kitchen waste gives about kg of compost.
Discussion (0)
Log in to join the discussion.
Loading…