The last one is not necessarily true
Answer:
Step-by-step explanation:
The solution of the problem has been solved on paper and attached in the attachment section. Kindly refer to that and feel free to ask any doubt.
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: See below
Step-by-step explanation:
4 parts of the whole are shaded, and there are a total of 10 parts
So the fraction is: 4/10
Simplifying by dividing both the numerator and denominator by 2 would give <em>2/5</em>
Decimal: 4 divided by 10 is 0.4
Percentage: Decimal * 100 = 0.4 * 100 = 40%