Question

Laura is baking a cake. The recipe says that she has to mix 64 grams of chocolate powder to the flour. Laura knows that 1 cup of that particular chocolate powder has a mass of 128 grams. She added two over three of a cup of chocolate powder to the flour. Should Laura add more chocolate powder to make the exact recipe, or did she go over and by what amount?

Answer 1

Laura out too much chocolate powder in. If 1 cup has a mass of 128 grams, take it and decide it by 3. 128÷3=42.7 Every 1/3 is equal to 42.7. (42.7)(2)=85.3 This says how much Laura put in since she put in 2/3. 85.3-64=21.3 This shows how much more powder Laura put in.

Answer 2

we know that

The recipe says that she has to mix
`64` grams of chocolate powder to the flour

`1` cup of that particular chocolate powder has a mass of
`128` grams

so

1) Find the mass of chocolate powder in two over three of a cup of chocolate powder

Multiply
`128` by
`(2)/(3)`

`128* (2)/(3) =85.33\ grams`

`85.33\ grams >64\ grams`

so

the answer part a) is

Laura added more chocolate powder to make the exact recipe

2) Find the amount of chocolate Laura added too much to make the exact recipe

Subtract
`64 \ grams` from
`85.33 \ grams`

`85.33-64=21.33 \ grams`

the answer part b) is

`21.33 \ grams`