Question

Luna and Ginny each cast magic spells. The ratio of spells Luna casts to spells Ginny casts is represented in the tape diagram.

Based on the ratio, what is the number of spells Ginny casts when Luna casts 2020 spells?

luna:4
ginny:5

Answer 1

Answer:

Ginny will cast  2525 spells

Step-by-step explanation:

The ratio of spells Luna casts to spells Ginny casts is:

Luna :4

Ginny :5

4 spells of Luna is equivalent to 5 spells of Ginny

1 spell of Luna is equivalent to 5/4 spells of Ginny

Luna casts 2020 spells

It means Ginny will cast $2020\times \dfrac{5}{4}$ spells

i.e. Ginny will cast  2525 spells

Answer 2

Answer: If Luna casted 2020 spells, Ginny casted 2525 spells.

Step-by-step explanation:

The ratio that we have is

Luna: 4

Ginny: 5

This means that for each 4 spells that luna casts, Ginny cast 5 spells.

Now, we know that luna casted 2020 spells, now, how many groups of 4 e have here?

2020/4 = 505

This means that Luna casted froups of 4 spells 505 times, and for each of those groups, Ginny casted 5 spells, so Ginny casted:

5*505 = 2525 spells.