Isabella competed in a triathlon. She completed the swimming event in 12.9 minutes, the biking event in 13.05 minutes, and the r
2 answers:
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<h2>The required "option A) 20" is correct.</h2>
Step-by-step explanation:
Let x be the smaller than 4 ×.
To find, the number of times smaller is 2 × than 4 ×
= ?
∴ x =
= 2 × ×
Using the identity,
= 2 ×
Using the identity,
= 2 ×
= 2 × 10
= 20
Thus, the required "option A) 20" is correct.