A and b can do a piece of work in 12 days. If a alone have to finish the job among b and c so
A and b=12
A (24 days alone without b)
So if b and c 15 days and c 20 days. If a have to do all I would add 24 and 15 and 20 which would be 59 days
Answer:
D
Step-by-step explanation:
Answer:
1,3,4
Step-by-step explanation:
all the others were wrong
Answer:
34.5 units²
Step-by-step explanation:
7 x 3 = 21
4.5 x 3 = 13.5
21 = 13.5 = 34.5 units²
Answer:
t=5
Step-by-step explanation:
34+9.70t=82.50
-34 -34.00
9.70t=48.50
divide 9.70 from both sides
t=5