Question
A shopkeeper sells a badminton shuttle whose marked
price is Rs 15, at a discount of 20% and gives a lollipop costing Rs 2.50 free with each shuttle. Even then he makes a profit of 25%. His cost price per shuttle is:Solution
MP = Rs 15 Discount = 20% and Rs 2.50 more SP = Rs {(80/100) × 15) -5/2} = Rs 12 - 5/2 = Rs 9.5 Gain = 25% CP = Rs 9.5 × 100/125 = Rs 7.6
When the activity of one gene is suppressed by the activity of a non-allelic gene, it is known as
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