If 4 mobiles cost $ 320, how many mobiles can be bought for $ 720.

Question

Alice · Answer

Answer:   The cost of 4 mobiles is =$320  The cost of a mobile is   = $320/4                                          =$80.  The number of mobiles bought for $720 is                                          =$720/$80                                          =9  The number of mobiles bought are    9      .

Ivy · Answer

Answer:   4 mob.=$320  1mob.=$80  x = ($720/$80)mob.  x= 9mob.  hope it helps

Skylar

ABC is a triangle. D and E are points on AB and AC respectively. DE is

parallel to BC. Prove that:

I. ∆ ~ ∆

If 10²ⁿ = 25 then 1/ 10 ⁿ equals to

1/5

1/50

1/625

-1/5

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