Respuesta :

Answer:

.3

Step-by-step explanation:

0.4/10 is 0.04 this is 10 percent

.02 is 5 percent

so 0.04 times 7 is 0.28 this is 70 percent

so you then need to add 5 percent

this gets you .3

this is the way you learn in early middle school this method can be harder when it comes to more difficult numbers

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