If it takes 6 men 4 days to dig a hole 3 metres deep, how long will it take 10 men to dig same hole 7 metres deep?
2 answers:
Answer:
It will take 5.6 days for the 10 men to dig the same hole 7 m deep.
Step-by-step explanation:
Laying the data in column
----------------------------------------------------
6 men 3 m hole 4 days
10 men 7 m hole x days
-----------------------------------------------------
As men dig a hole in
days, so their rate will be:
Then men would take
days to dig a hole of depth 7 m.
As we are letting 10 men do work, so they would
take days.
so
days
Therefore, it will take 5.6 days for the 10 men to dig the same hole 7 m deep.
You might be interested in
The amount that Susan will have to pay in interest is given by: Option A: $5.33 approx.
<h3>How to find the percentage from the total value?</h3>Suppose the value of which a thing is expressed in percentage is "a'
Suppose the percent that considered thing is of "a" is b%
Then since percent shows per 100 (since cent means 100), thus we will first divide the whole part in 100 parts and then we multiply it with b so that we collect b items per 100 items(that is exactly what b per cent means).
Thus, that thing in number is
For this case, we're given that:
- Amonut Susan took out = $200
- Interest rate = 32% annually (interest rates are usually expressed in annual (yearly) terms).
- Amount paid off within 1 month
The interest was 32% annually, so in monthly terms, it would be 32/12 = 2.667% approx. (as there are 12 months in each year)
Since the balance was paid within one month, the interest would be simply 1 time calculated on the main balance.
Thus, we get:
Interest amount ≈ 2.667% of $200 =
Thus, the amount that Susan will have to pay in interest is given by: Option A: $5.33 approx.
Learn more about percent here: