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solmaris [256]
1 year ago
12

four people each working for five hours a day can do piece of work in six days how long will two people each working for seven h

ours a day to complete the work
Mathematics
1 answer:
AnnyKZ [126]1 year ago
3 0

we have that

four people, five hours a day, six days

that represents

each people works-----> 30 hours in six days (5*6)

each people can do ----> 25% of the work (100%/4)

Divide percentage by the number of hours

25/30=5/6 % by hour

that means

Each people can do (5/6)% by hour

two people working for seven hours a day--------> represents 14 hours a day

Multiply 14 hours by (5/6)

14*(5/6)=11.67%

that means

two people in one day can do 11.67% of the work

Applying proportion

1/11.67%=x/100%

solve for x

x=100/11.67

x=8.6 days------> Round up

<h2>the answer is 9 days</h2>
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Answer:

1 hour and 15 minutes

Step-by-step explanation

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Hope this helps!

6 0
1 year ago
What is the measure of the central angle of a circle with radius 15ft that intercepts a 10ft arc
svetlana [45]
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5 0
3 years ago
2(x-5)=4x+7<br> solve for x
OLEGan [10]

Answer:

x=-6

Step-by-step explanation:

5 0
3 years ago
What is the interquartile range of this data? A.6 B.7 C.8 D.9
Butoxors [25]
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6 0
3 years ago
Help please this my second time posting this please help
Nesterboy [21]

Answer:

x = √30

Step-by-step explanation:

From small triangle BDC:

using Pythagorean theorem

CB² = BD² + DC²

x² = BD² + 3²

Fron triangles BDC and ADB.

ΔBDC has long leg BD and short leg DC.

ΔADB has long leg AD and shirt leg BD.

AD : BD = BD : DC

7 : BD = BD : 3

7*3 = BD*BD

BD² = 7*3 = 21

x² =  BD² + 3² = 21+9 = 30

x² = 30

x = √30

4 0
3 years ago
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