Mathematics for IGCSE & O level - Ratio And Proportion (Section 5 - No. 1)

If 9 similar books cost $36, what will 5 such books cost?

$15

$20

$24

$28

Explicaţie

Cost per book = 36/9 = $4. 5 books= 5*4=20

Comentarii (0)

Publicitate