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Let the number be x. Then, x × 7/10 – 38% of x = 112 => 7x/10 – 38x/100 = 112 => 70x – 38x = 112 × 100 => 32x = 11200 ∴ x = 350 ∴ 20% of 350 = 350 × 20/100 = 70
A man can complete a work in 12 days. He worked for 5 days and then left. If the remaining work is completed by another man who can complete it in 18 da...
If the mean of four observations is 20 and when a constant C is added to each observation the mean becomes 22 the value of C is –
A number is increased by 20% and then decreased by 20%. What is the net effect on the number?
A person spends 40% of his income on rent, 30% on food, and 20% on education. If he saves ₹2000, what is his total income?
Aman bought 21 notebooks for Rs.1250 from shop A and 12 notebooks for Rs.895 from shop B. What is the average price he paid per book?
A man spends 35% of his income on food, 25% on rent, and the remaining amount on other expenses. If he saves ₹9,000, which is 20% of his income, find ...
In an exam Dinesh scored 362 marks and Shivam got 68 % marks in the same exam which is 12 marks more than Dinesh. If the minimum passing marks in the ex...
A man invested ₹12,000 in a business, and his partner invested ₹15,000. After 8 months, the first partner withdrew half of his investment. If the t...
Find the simplified value of the expression:
32 + 12 x 108 ÷ 12 + 4 + 32 ÷ 16 x 3
P and Q together can complete a certain task in 45 days. P can finish the task alone in 75 days. How many days will it take for Q...
