alonso032499 alonso032499

25-06-2017
Mathematics

contestada

Jack is 2 times as old as Lacy. 7 years from now the sum of their ages will be 35 . How old are they now?

Respuesta :

majdiShokri majdiShokri

25-06-2017

Assume the old of Jack is X and the old of Lacy is Y
so ...
do the mathematical model ...
.
X=2Y
(X+7)+(Y+7)= 35
-
THEN
Solve the equation
y= 7
x = 14

Answer Link

Otras preguntas

I am so confused on functions! Please help!

Though most volcanoes are mountains, most mountains are not volcanoes, why or why not?

Saturn has a radius of 60,330,000 meters and a mass of 5.7 × 10^26 kilograms. Calculate the strength of its gravitational field.

why are humans more like animals than plants

A number (x) increased by 6 and then the sum is doubled

Hi, can you help with this problem:(-50)/2

A population of 3.5 million bacteria increases by 488000 . How many bacteria are there now?

a bank allows university students a 1000 overdraft facility on their bank accounts. in one month a student was 675 overdrawn. the next month the same student

List three things that Gandhi and his followers want from the British.

Help with problem 14?!