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
