GOOD EVENING, FRIENDS, I WANT TO ASK ON THE ACCOUNT OF HIS NAMEBENJEMIN360 . THIS ANSWERS ARE VERY WONDERFUL, BUT I CAN'T COMMUNICATE WITH HIM. COULD YOU SEE MY COMMENT ANSWER MY QUESTION.
thank you everyone :)
Im pretty sure it is D
hope you get this right
0.000038 = 3.8e-5 = 3.8×10⁻⁵
Let a and b be store A and store B, respectively. Then:
3a+b=63
5a+4b=140
So
12a+4b=252
5a+4b=140
7a=112
a=16
b=15
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