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5 girls can do a piece of work = 9 days 1 girl can do a piece of work = 9 × 5 = 45 days. 4 boys can do a piece of work = 8 days 1 boy can do a piece of work = 4 × 8 = 32 days. 6 men can do a piece of work = 2 days 1 men can do a piece of work = 6 × 2 = 12 days. 4 women can do a piece of work = 4 days 1 woman can do a piece of work = 4 × 4 = 16 days. Hence, girls are least efficient.
If the first term of a geometric progression (GP) is 12 and the common ratio is 4, then find the sum of its 4 terms.
What is the unit digit of (217)413 × (819)547 × (414)624 × (342)812?
₹ 1,350 is divided among Nitin, Tushar, and Gitanjali. The share of Gitanjali is 5/4 of the sum of the shares of Nitin and Tushar. What is the share o...
Christina spends half of her salary and saves the other half. If she spends ₹ 40,000 monthly, what is her annual savings?
Find the number whose four-fifth is more than its three-fourth by 5.
If y = ∛ 6 – 4, then what is the value of y³ + 12y² + 48y + 100?
The digits of a two-digit number ‘N’ are reversed to form a new number ‘M’. If M < N and N – M = 27, then which of the following maybe ‘N’...
The sum of two numbers is 60 whereas the sum of their reciprocals is (20/9). Find the square of the product of the two numbers.