Ask question

Ask question

All categories

2 years ago

10

At a children's concert there were 80 boys. There were 1 1/2 times the number of girls as boys. What percentage of the total num

ber of children at the concert were girl?

1 answer:

beks73 [17]2 years ago

4 0

Answer:

60% are girls

Step-by-step explanation:

80 x 1.5 = 120 which is the amount of girls

120 out of 200 is 12/20 or 3.5 which is 60%

You might be interested in

How can you quickly calculate 20 percent of any bill amount?

il63 [147K]

The answer is C an example is 20% of $20 is 4, so you would lose the zero and double the 2 to get 4

8 0

2 years ago

Read 2 more answers

A vertical cylinder is leaking water at a rate of 4m3/sec. If the cylinder has a height of 10m and a radius of 2m, at what rate

Lyrx [107]

Answer:

Therefore the rate change of height is $\frac{1}{\pi}$ m/s.

Step-by-step explanation:

Given that a vertical cylinder is leaking water at rate of 4 m³/s.

It means the rate change of volume is 4 m³/s.

$\frac{dV}{dt}=4 \ m^3/s$

The radius of the cylinder remains constant with respect to time, but the height of the water label changes with respect to time.

The height of the cylinder be h(say).

The volume of a cylinder is $V=\pi r^2 h$

$=( \pi \times 2^2\times h)\ m^3$

$\therefore V= 4\pi h$

Differentiating with respect to t.

$\frac{dV}{dt}=4\pi \frac{dh}{dt}$

Putting the value $\frac{dV}{dt}$

$\Rightarrow 4\pi \frac{dh}{dt}=4$

$\Rightarrow \frac{dh}{dt}=\frac{4}{4\pi}$

$\Rightarrow \frac{dh}{dt}=\frac{1}{\pi}$

The rate change of height does not depend on the height.

Therefore the rate change of height is $\frac{1}{\pi}$ m/s.

3 0

2 years ago

Marcel brought in 40 cookies to share equally with his classmates.

klemol [59]

Answer: A

Step-by-step explanation: you would multiply

3 0

2 years ago

How much longer than 5/8 inch is 7/8 inch?

ivanzaharov [21]

Its 1/4 inch longer.

hope this helps you

4 0

3 years ago

Evaluate the expression 120n + 160 then n=5

Mamont248 [21]

Answer:

760

Step-by-step explanation:

First you multiply 120 by 5 because n equals five which equals 600 then add 160 which equals 760

5 0

2 years ago

Read 2 more answers