Q. Find 65% of 40% of 500 Q. 38% of 50 = ? Q.16% of 25 = ? Q. 44% of 50 = ?

Q. Find 65% of 40% of 500. (প্ৰশ্নঃ 500-ৰ 40%-ৰ 65% নিৰ্ণয় কৰক।)





Trick



  • 40% of 500 = 200

  • 65% of 200 = (200 × 65) ÷ 100

  • 2 × 65 = 130


Ans / উত্তৰ = 130


Shortcut:


500 × 40% × 65%


= 500 × 40 × 65 ÷ 100 ÷ 100


= 200 × 65 ÷ 100


= 130


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Tip:


Use this rule for percent of 50:


x% of 50 = x ÷ 2


For 25:


x% of 25 = x × 0.25 (or x ÷ 4)


200% = 2 , 100% = 1 , 50% = ½ , 25% = ¼


Question :


1. 38% of 50 = ?


Shortcut: 38 ÷ 2 = 19


2. 16% of 25 = ?


25 × 16% = 25 × 0.16 = 4


3. 44% of 50 = ?


Shortcut: 44 ÷ 2 = 22