🗂️
The Cold Case
Goblin Detective Agency · your first week
Detective
Date
Goblin says
This week is just you and me, detective. No hints from your tutor this time, and that is completely fine, that is the whole idea.
Here is the secret: I do not care about right answers right now. I care about hearing you think. So turn the voice memo on and talk out loud the whole way through, even the messy "ummm I don't know" bits. Especially those bits.
Stuck on one? Say what is making it tricky, then move on and come back. Recording on? Good. Let's open the cases.
Case 1🎙️ talk out loud
Liam is filling a 45 litre fish tank using a bucket. The tank already has 9 litres in it. Each time he tips the bucket in, it adds 4 litres. He started at 3pm. How many bucket-loads until the tank is full?
My working
Answer:
Case 2🎙️ talk out loud
A candle is 20 cm tall when it is lit. It burns down by 3 cm every hour. After how many hours will it be 5 cm tall?
My working
Answer:
Case 3🎙️ talk out loud
At a market stall, one large jar of honey costs the same as three small jars. Maya buys two large jars and four small jars and spends $50 in total. How much does one small jar cost?
My working
Answer:
Case 4🎙️ talk out loud
A jacket costs $80. In a sale it is reduced by 25%. At the till, Kelcy also uses a member card that takes a further $5 off. How much does she pay?
My working
Answer:
Case 5🎙️ talk out loud
The perimeter of a rectangle is 30 cm. The length is twice the width. Find the length and the width.
My working
Answer: