sana has some amount with her she can buy 50 rings or 40 change. She retains 10% of the amount and buy 20 chains and with the balance she buys rings . how many rings did she purchase?
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She purchased 20 rings.
• Given data :
She can purchase 50 rings or 40 chains with her total money.
She retained 10% of her total money.
She purchased 20 chains with her remaining money.
• Now,
She can buy,
40 chains by her = 100% money
1 chain by her = 100%/40 money
20 chains by her = 100%/40 × 20 = 50% money.
• So,the budget for ring purchase
= 100% - (Chain price + Retained money)
= 100% - (50%+10%)
= 40% of her money
• Now,
By 100% of her money she can buy = 50 rings
By 1% of her money she can buy = 50/100 rings
By 40% of her money she can buy = 50×40/100 = 20 rings
So,she can buy 20 rings. (Answer)
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