Question

Lucia is a wonderful grandmother. her age is between 50 and 70.each of her sons have as many sons as they have brothers. their combined number gives lucia?s age. what is the age?

Answer 1

If the brothers are x

The number of sons = (x -1)x = x² - x

The total number = x + x² - x

                            = x²

A perfect square that lies between 50 and 70 is 64

So Lucia (The grandmother) is 64 years old




NOTE:

x² = 64

x = 8

There are 8 brothers each with 7 sons

One of the brothers will say that he has 7 brothers and 7 sons

Answer 2

Answer:

Step-by-step explanation:

If the brothers are x

The number of sons = (x -1)x = x² - x

The total number = x + x² - x

= x²

A perfect square that lies between 50 and 70 is 64

So Lucia (The grandmother) is 64 years old

NOTE:

x² = 64

x = 8

There are 8 brothers each with 7 sons

One of the brothers will say that he has 7 brothers and 7 sons