Answer:
s = 4
Step-by-step explanation:
3r = 10 + 5s
3×10 = 10 + 5s
5s = 30 - 10
5s = 20
s = 20 : 5
s = 4
Answer: 10
Step-by-step explanation:
I think it is 10 because they take 30 min. To do it together. Gertrude must take longer since she is the one who did 40 min. And if you subtract 40-30=10.
Again that’s what I think so... hope you get it right!
Alrighty, this is what I got...
b=<span><span><span>−<span>3c</span></span>+<span>2x over </span></span><span>a</span></span>