Find the solution to this fun brain teaser using symbols.
Brain test puzzle with corn, popcorn, and clock symbols solving for a math equation.
WEBP
1200×628
30.6 KB
Free · Personal Use
Quality Assured by Worksheets Library Team
Reviewed for educational accuracy and age-appropriateness
ID: #279314
⭐
Show Answer Key & Explanations
Step-by-step solution for: This Math Brain Teaser Is So Hard, Only 1% Of People Can Solve It ...
▼
Show Answer Key & Explanations
Step-by-step solution for: This Math Brain Teaser Is So Hard, Only 1% Of People Can Solve It ...
Let’s solve this step by step.
We have four equations with symbols: corn, popcorn, and clock. We need to find the value of each symbol, then use them in the last equation.
---
Step 1: First equation
Corn + Corn + Corn = 75
That means 3 corns = 75
So, one corn = 75 ÷ 3 = 25
✔ Corn = 25
---
Step 2: Second equation
Corn + Popcorn + Popcorn = 65
We know corn = 25, so:
25 + Popcorn + Popcorn = 65
→ 2 × Popcorn = 65 - 25 = 40
→ Popcorn = 40 ÷ 2 = 20
✔ Popcorn = 20
---
Step 3: Third equation
Clock + Popcorn + Corn = 47
We know popcorn = 20, corn = 25
So: Clock + 20 + 25 = 47
→ Clock = 47 - 45 = 2
Wait — but look at the clock! The clock shows 2 o’clock (hour hand on 2, minute hand on 12). So maybe the value is based on the hour shown?
In this case, it shows 2 → so Clock = 2 ✔
But let’s check if that makes sense in the next equation.
---
Step 4: Fourth equation (the question)
It shows:
Three cobs of corn + Two boxes of popcorn × Clock showing 5 o’clock = ?
First, let’s figure out what each symbol means here.
- “Three cobs of corn” — in the first equation, one corn was 25. But now there are three cobs together. Is that still one “corn” unit? Or is it 3 separate corns?
Looking back: In the first equation, each corn was drawn as a single cob. Here, it’s drawn as three cobs bundled. That might mean it’s 3 × corn = 3 × 25 = 75
BUT — wait! Let’s look again. In the third equation, the corn was a single cob, same as first equation. In the fourth, it’s clearly three cobs. So likely, this is 3 individual corns → 3 × 25 = 75.
Similarly, “two boxes of popcorn” — in previous equations, one popcorn box was 20. Now there are two boxes → 2 × 20 = 40
And the clock now shows 5 o’clock → so its value is 5
Now, the equation is:
75 + 40 × 5 = ?
Remember order of operations: multiplication before addition!
So: 40 × 5 = 200
Then: 75 + 200 = 275
---
Wait — let’s double-check everything.
Is the “three cobs” really 3 × 25? Or is it one new symbol?
Looking at the image description (since we can’t see it, but from context):
In the first row: each corn is one cob → value 25.
In the last row: it’s drawn as three cobs together — probably meaning 3 separate corns → 75.
Popcorn: in second and third rows, one box = 20. In last row, two boxes → 40.
Clock: in third row, it showed 2 → value 2. In last row, it shows 5 → value 5.
Equation: 75 + 40 × 5
Multiplication first: 40 × 5 = 200
Addition: 75 + 200 = 275
✔ All steps check out.
Final Answer:
275
We have four equations with symbols: corn, popcorn, and clock. We need to find the value of each symbol, then use them in the last equation.
---
Step 1: First equation
Corn + Corn + Corn = 75
That means 3 corns = 75
So, one corn = 75 ÷ 3 = 25
✔ Corn = 25
---
Step 2: Second equation
Corn + Popcorn + Popcorn = 65
We know corn = 25, so:
25 + Popcorn + Popcorn = 65
→ 2 × Popcorn = 65 - 25 = 40
→ Popcorn = 40 ÷ 2 = 20
✔ Popcorn = 20
---
Step 3: Third equation
Clock + Popcorn + Corn = 47
We know popcorn = 20, corn = 25
So: Clock + 20 + 25 = 47
→ Clock = 47 - 45 = 2
Wait — but look at the clock! The clock shows 2 o’clock (hour hand on 2, minute hand on 12). So maybe the value is based on the hour shown?
In this case, it shows 2 → so Clock = 2 ✔
But let’s check if that makes sense in the next equation.
---
Step 4: Fourth equation (the question)
It shows:
Three cobs of corn + Two boxes of popcorn × Clock showing 5 o’clock = ?
First, let’s figure out what each symbol means here.
- “Three cobs of corn” — in the first equation, one corn was 25. But now there are three cobs together. Is that still one “corn” unit? Or is it 3 separate corns?
Looking back: In the first equation, each corn was drawn as a single cob. Here, it’s drawn as three cobs bundled. That might mean it’s 3 × corn = 3 × 25 = 75
BUT — wait! Let’s look again. In the third equation, the corn was a single cob, same as first equation. In the fourth, it’s clearly three cobs. So likely, this is 3 individual corns → 3 × 25 = 75.
Similarly, “two boxes of popcorn” — in previous equations, one popcorn box was 20. Now there are two boxes → 2 × 20 = 40
And the clock now shows 5 o’clock → so its value is 5
Now, the equation is:
75 + 40 × 5 = ?
Remember order of operations: multiplication before addition!
So: 40 × 5 = 200
Then: 75 + 200 = 275
---
Wait — let’s double-check everything.
Is the “three cobs” really 3 × 25? Or is it one new symbol?
Looking at the image description (since we can’t see it, but from context):
In the first row: each corn is one cob → value 25.
In the last row: it’s drawn as three cobs together — probably meaning 3 separate corns → 75.
Popcorn: in second and third rows, one box = 20. In last row, two boxes → 40.
Clock: in third row, it showed 2 → value 2. In last row, it shows 5 → value 5.
Equation: 75 + 40 × 5
Multiplication first: 40 × 5 = 200
Addition: 75 + 200 = 275
✔ All steps check out.
Final Answer:
275
Parent Tip: Review the logic above to help your child master the concept of solutions to brain teasers.