If the length of time, y hours, it takes to put a jigsaw puzzle together is inversely proportional to the number of children, x, this is represented as;

$y \alpha \frac{1}{x}\\y =\frac{k}{x}$

k is the constant of proportionality

If it takes 16 children 6 hours to put the jigsaw puzzle together, this means at x = 16, y = 6

Substitute:

6 = k/16

k = 6*16

k = 96

W are to find number of children needed to put the same jigsaw puzzle together in 4 hours, this is done by substituting k = 96 and y = 4 into the expression y = k/x

y = 96/4

y = 24

Hence it will take 24 children to put the same jigsaw puzzle together in 4 hours

5 0

3 years ago

a group of five people can do a piece of work in 6 hours calculate the time a group of 8 people will take to complete the same w

frosja888 [35]

Answer:

3.75 hours

Step-by-step explanation:

Total time needed

5 * 6 = 30 hours

with 8 people

30/8 = 3.75 hours

5 0

3 years ago

Read 2 more answers

When using the distributive property, the expression 3(2x - 1) would be simplified to

VARVARA [1.3K]

Answer:

$6x - 3$

Step-by-step explanation:

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4 0

3 years ago