Between 2000 and 2014, the number of twin births in a certain country increased by 15%, to approximately 133975. about how many twin births were there in 2000?

An increase by 15% means 15 added to per cent (per = each; cent=100).

If the population was 100 in the year 2000 then it would be 115 in the year 2014. (adding 15 to 100)

The population was 116500 in the year 2000 and it increased to 133975 in the year 2014.

Let the population be x in the year 2000.

Using ratio and proportion

Year 2000 : Year 2014

100              :       115

x                  :    133975

Applying cross product rule

x × 115= 100× 133975

x= 100× 133975/115

x= 116500

The population was 116500 in the year 2000 and it increased to 133975 in the year 2014.

link

116500

Step-by-step explanation:

We are looking for the number of twin births in 2000.

Let the number of twin births in 2000 be x.

The number of twin births in 2000 is 100% of the number of births in 2000 since 100% of something is the entire thing.

The number of twin births went up 15% from 2000 to 2014, so in 2014, the number of twin births was 100% of the number of twin births plus another 15% of the number of twin births.

100% + 15% = 115%

The number of twin births in 2014 was 115% of x.

The number of twin births in 2014 was 133975.

115% of x = 133975

115% * x = 133975

1.15x = 133975

x = 133975/1.15

x = 116500

The number of twin births in 2000 was 116500.

cut 138 centimeters off

step-by-step explanation:

250-112 = 138