Question
A man alone can do a work in 25 days. A woman can complete
half of the same work in 20 days. In how many days can they complete 90% of the work together?Solution
ATQ,
Time taken by the woman to finish the entire work = 20 ÷ 0.5 = 40 days
Let the total work be 200 units. {LCM of (25 and 40)}
So, efficiency of the man = 200 ÷ 25 = 8 units/day
And efficiency of the woman = 200 ÷ 40 = 5 units/day
So, required time = (200 × 0.9) ÷ (8 + 5) = 13.85 days
‘A’ and ‘B’ can do a piece of work in 25 days and 30 days, respectively. If they started the work together and worked on it for 5 days, then fin...
Out of 10 men, 3 are wearing red caps, 4 are wearing green caps, and the remaining men are wearing orange caps. They are to be seated in a linear row. I...
In what ratio rice at 47 Rs/kg should be mixed with the rice at 28 Rs/kg so that selling mixture at Rs 45 per kg gives the profit of 25% if the quantity...
33.98 X 17.99 - (7.99 X 8.99) ÷ 1.99 - 27.99 X 4.01 = ? X 3.99
If '176x95' is a six-digit number that is divisible by 3, then find the maximum value of '5x'.
In a Mixture, the ratio of Milk and Water is 7: 5. If 12 litre mixture drawn off and replace by 8 litre water then the ratio of Milk and Water become 1...
A shopkeeper offers successive discounts of 20% and 10% on a product. If the marked price of the product is ₹1000, what is the selling price?
You are provided with three sequences below. Determine the values of P, Q, and R, and then identify the relationship among them.<...
The three digits of a three-digit number are in the ratio 3:2:5. If 111 is added to this number, what is the sum of the digits of the resulting number?
In what ratio rice at 52 Rs/kg should be mixed with the rice at 36 Rs/kg so that selling mixture at Rs 50 per kg gives the profit of 25% if the quantity...
