How to convert numbers into decimals
Answers
Answer:
1. Example: To convert 75% to decimal format, divide 75 by 100.
2. Example: To convert 75% to decimal format, move the decimal point before the 7.
3. Example: To convert . 75 to a percentage, multiply it by 100.
4. Example: To convert . 75 to a percentage, move the decimal point to after the 5.
Answer:
ANSWER
Work efficiency of pump A in emptying pool =
4
1
per hour
Work efficiency of pump B in emptying pool =
6
1
per hour
∴ work done by A and B together =
4
1
+
6
1
=
24
10
per hour
Hence time taken to fill the tank 100% =
10
24
hours
∴ time taken to fill 50% =
5×100
12×50
= 1.2 hours
Since, 1hour=60minutes
∴1.2 hours= 1.2×60=72 minutes
72 minutes = (60+12) minutes = 1hour 12minutes
So, the answer is option A
Answered By
sonam
Step-by-step explanation:
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