Mathematics
Grade-8
Easy

Question

The cost of 17 dragon fruits, if 3 dragon fruits cost $3.6, is

  1. $18
  2. $18.5
  3. $20.4
  4. $22.6

hintHint:

Evaluate the cost of 1 dragon fruits by using the cross multiplication method.

The correct answer is: $20.4


    N u m b e r space o f space d r a g o n space f r u i t s space space space space space space space space space space space space space space space space C o s t
space space space space space space space space space space space space 3 space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space $ 3.6
space space space space space space space space space space space space 17 space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space $ x

T h e r e f o r e comma
x space equals space fraction numerator 17 space cross times space 3.6 over denominator 3 end fraction space equals space fraction numerator 17 space cross times space 36 over denominator 3 space cross times space 10 end fraction space equals space 204 over 10 space equals space $ 20.4

H e n c e comma space t h e space cos t space o f space 17 space d r a g o n space f r u i t s space i s space $ 20.4

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