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Sticky Note
A photograph measuring 5 cm by 7 cm is enlarged in the ration of 7:5. What is new length and width of the picture ?
  1. 7 cm by 9 cm
  2. 7.6 cm by 9.8 cm
  3. 7 cm by 9.8 cm
  4. 7 cm by 8.8 cm
Explanation

Enlarge ratio = 7/5 

new length = 5*7/5=7 cm 

New width = 7*7/5=49/5=9.8 cm 

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