Several people form groups with four people in each group. write an expression for the number of groups formed by p people. how many groups are formed if there are 28 people?

Number of groups formed by 'p' people =

Number of groups formed with 28 people = 7

Step-by-step explanation:

We are given that, there are 4 people in 1 group.

Now, at first we have to find the number of groups formed by 'p' people.

Here, we will use the unitary method.

Number of group formed with 4 people = 1

So, number of group formed with 1 person =

∴ number of groups formed with 'p' people =

So, the required expression for the number of groups formed by 'p' people is

Now, secondly we have to find the number of groups formed by 28 people.

As, we know that number of groups formed with 'p' people =

Now, putting 'p' = 28 in the expression obtained above, we get

number of groups formed by 28 people =

So, there are 7 groups formed with 28 people.

i think it would be 42cm

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.