Rachel is 12 years old, and her grandfather is 7 times her age. Her mother is half grandfather's age, and her father is 5 years older than her mother. How old will Rachel's father be when she is 25 years old?
Rachel's grandfather is 12 x 7 = 
<gadget id="calculator">12*7</gadget>
<output>84</output>
84 years old.
Her mother is 84/2 = 
<gadget id="calculator">84/2</gadget>
<output>42</output>
42 years old.
Her father is 42 + 5 = 
<gadget id="calculator">42+5</gadget>
<output>47</output>
47 years old.
Rachel will be 25 years old in 25 - 12 = 
<gadget id="calculator">25-12</gadget>
<output>13</output>
13 years.
Rachel's father will be 47 + 13 = 
<gadget id="calculator">47+13</gadget>
<output>60</output>
60 years old.

<result>60</result>