Word Problem #18 from Test 4.1,2,3,4,5

D. Akpobiyeri Math III Mr. Kirkland's Class

The Johnson twins were born 10 years after their older sister. This year, the product of the three siblings ages is exactly 1960 more than the sum of their ages.

T= age of Johnson twins

T=X

Find X

0=t^3+10t^2-3t-1970

y= x^3+10x^2-3x-1970

X=T

X=10

so T=10

Johnson twins : 10 years old

Older Sister: (T+10)=(10+10)= 20 years old

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