if 2 successive discounts of 25% and Z% is equivalent to an overall discount of 47.5%. find the value of Z.
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Answer:
30%
Step-by-step explanation:
the formula of successive discount = x+y-xy/100
then,
25+y-25y/100 = 47.5
2500+100y-25y = 4750
2500+75y = 4750
75y = 4750-2500
75y = 2250
y = 2250/75
y = 30 % ans.
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