3 years ago

If 30% of John's photographs were perfect, but 210 photographs were not perfect, then how many photographs were there in all?

1 answer:

3 0

If 30% were perfect, 70% were not perfect. So we know that 70% of the total number of photographs is 210.

p(70/100)=210 multiply both sides by 100

70p=21000 divide both sides by 70

p=300

So there are 300 photographs in all.

You might be interested in

Please help I'll give brilliantist:)

Scilla [17]

Answer:

-7

Step-by-step explanation:

The full coordinate is (-7,3) the dot is on the line between -6 and -8

8 0

3 years ago

Read 2 more answers

<img src="https://tex.z-dn.net/?f=%20%7B2%7D%5E%7Bn%7D%20%20%3D%20226%20%20" id="TexFormula1" title=" {2}^{n} = 226 " alt=" {2

Rudik [331]

N equals to 7.82 (to 2 decimal places)

5 0

3 years ago

Read 2 more answers

The number of cars sold at a dealership over several weeks is given below.

andrezito [222]

Answer:

A. 6.9

Step-by-step explanation:

Edge 2020

8 0

2 years ago

Adult tickets for a concert cost $16.00, and student tickets cost $12.00. If twice as many student tickets as adult tickets were

Len [333]

Answer:

670 adult tickets
1340 student tickets

Step-by-step explanation:

One group of 2 student and 1 adult tickets will go for 2×$12 +16 = $40. The number of such groups sold was ...

$26,800/$40 = 670

There were 670 adult tickets sold.

There were 670×2 = 1340 student tickets sold.

6 0

2 years ago

Read 2 more answers

A diver descends from an elevation of 6ft below sea level to an elevation of 98ft below sea level in 4 equal intervals. What was

omeli [17]

98 minus 6 equals 92. 92 divided by 4 equals 23

8 0

2 years ago