Chasing

Level 2

Minrefhorts, Noswhaiturn, Darunconcevants are cycling from Adventesent to Behoddlarnt for a picnic.

Minrefhorts and Noswhaiturn started cycling at the same time. Darunconcevants started cycling 30 minutes later.

1 hour after Darunconcevants met Minrefhorts, he met Noswhaiturn.

The velocity of Minrefhorts, Noswhaiturn, Darunconcevants cycling are respectively v 1 = 10 k m / h v_1 = 10 \ km/h ; v 2 = 12 k m / h v_2 = 12\ km/h ; v 3 v_3 .

Calculate the value of v 1 v 2 v 3 \dfrac{v_1v_2}{v_3} .

Enter your answer in k m / h km/h .

This is part of the series: " It's easy, believe me! "


The answer is 8.

Thành Đạt Lê by Thành Đạt Lê , 17, Singapore

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