Katrina has two sisters. One of the sisters is 7 years older than Katrina. The other sister is 3 years younger than Katrina. The product of Katrinas

Question

zurilomk4 · Accepted Answer

Step 1  Given:  Katrina has two sisters.  one of the sisters is 7 years older than Katrina.  the other sister is 3 years younger than Katrina.  the product of Katrinas

soanooooo40 · Accepted Answer

Lets

nick1337 · Accepted Answer

lets assume that age of tamara is Z and Katrina sister&#039;s age are X and y according to Question: one sister is 7 years older than tamara: i.e. X=Z+7(1) Other sister is 3 years younger than tamara: Y=Z-3 (2) product of tamara &#039;s sisters age is 24 XY=24 (3) multiply eqn1 and eqn2 XY=Z2+4Z−21 put value of XY from eqn2 24=Z2+4Z−21 on solving this equation Z=5, -9 we got two values of Z but one of them is negative and age can not be negative so Z=5 years hence, Age of Katrina =5 years