A glass is 2 3 full. Then 40cm3 of orange juice is poured in. The glass is now 4 5 full. What is the total volume of the glass?

Question

pls helpppp

Answer 1

First, let's find out how much 40 cm3 is:

⁴/₅ - ²/₃ = ___

¹²/₁₅ - ¹⁰/₁₅ = ²/₁₅

So 40 cm³ is equal to ²/₁₅. Halve that, and we have 20 cm³ equaling ¹/₁₅. I hope you're seeing where I'm going with this. If 20 cm³ equals ¹/₁₅ of the glass, then multiply 20 and 15 together to get the total volume of the glass.