Ja tontti
jack said, “five times my age in 2 years is 100."
how old is jack now?

19 years, 7 months, and six days old

Step-by-step explanation:

100-2=98/5=19.6

18 years old

Step-by-step explanation:

Break it down: 5×(age in 2 yrs)=100

Rewrite with a variable: 5×(x+2)=100

Multiply it out: 5x + 10 = 100

Isolate the x term: 5x = 90

Isolate the x: x = 18

3/4 ÷ 3/4

step-by-step explanation:

basically divide any proper fraction with itself to fit the criteria.

so if we are using 3/4, then:

3/4 ÷ 3/4 = 1

so 1 is the quotient.

and the numerators for both these fractions is 3.   and if we divide the numerators:

3 ÷ 3 = 1

we see that quotient is equal to our original quotient as well.

step-by-step explanation: