The johnson twins were born nine years after their older sister. this year, the product of the three siblings ages is exactly 1861 more than the sum of their ages. how old are the twins?

The age of the twins is 10 years.

Step-by-step explanation:

Suppose the age of older sister be x

Let the age of twins sister be x-9, as they are born after 9 years.

Product of their ages be

Sum of their ages will be

According to question,

So, Age of older sister will be 19 years.

Age of the twins will be

Hence, the age of the twins is 10 years.

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.