50 years ago in Numerical Aptitude

# A man can do a piece of work in 7 days, but with the help of his son, he can do it in 5 days. In what time can the son do it alone?एक व्यक्ति एक काम को 7 दिन में कर सकता है, लेकिन अपने बेटे की मदद से वह इसे 5 दिनों में कर सकता है| लड़का अकेले इसे कितने समय में पूरा कर सकता है?

[A] <span class="math-tex">$$17\frac{1}{2}\;$$</span> days<br/><span class="math-tex">$$17\frac{1}{2}\;$$</span> दिन
[B] 18 days<br/>18 दिन
[C] <span class="math-tex">$$12\frac{1}{2}$$</span> days<br/><span class="math-tex">$$12\frac{1}{2}$$</span> दिन
[D] <span class="math-tex">$$16\frac{1}{2}$$</span> days<br/><span class="math-tex">$$16\frac{1}{2}$$</span> दिन

## Overall Stats

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ram manohar - 2 years ago

ram manohar from Hyderabad, India is saying $$17\frac{1}{2}\;$$ days
$$17\frac{1}{2}\;$$ दिन

Nazia Sayed - 2 years ago

Nazia Sayed from Mumbai, India is saying 18 days
18 दिन

SARANG - 3 years ago

SARANG from Patna, India is saying $$17\frac{1}{2}\;$$ days
$$17\frac{1}{2}\;$$ दिन

## Related Questions

• [A] 30%
• [B] 28%
• [C] 24%
• [D] 15%

• [A] 5 : 1
• [B] 3 : 2
• [C] 1 : 2
• [D] 2 : 1

• [A] Rs. 500
500 रुपए
• [B] Rs. 800
800 रुपए
• [C] Rs. 900
900 रुपए
• [D] Rs. 1500
1500 रुपए

• [A] Rs. 114
114 रु
• [B] Rs. 115
115 रु
• [C] Rs. 118
118 रु
• [D] Rs. 120
120 रु

### The value of a machine depreciates by 20% every year. If its present value is Rs. 32000, its value after 2 yr will beएक मशीन का मूल्य हर वर्ष 20% से गिर जाता है। यदि उसका वर्तमान मूल्य 32000 रु. है, तो 2 वर्ष बाद उसका मूल्य होगा -

• [A] Rs. 18000
18000 रु.
• [B] Rs. 20480
20480 रु.
• [C] Rs. 25600
25600 रु.
• [D] Rs. 19200
19200 रु.