Ayden is 140 cm tall, and his friend Alex is 1/5 taller than him. How tall is Alex?

Correct answer:

b =  168 cm

Step-by-step explanation:

a=140 cm r=1+51=51 5+51=55+51=55+1=56=1.2  b=a r=140 56=5140 6=5840=168 cm

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