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Let the total work = 180 units (LCM of 30, 45 and 36) Amount of work done by Karan alone in one day = 180/30 = 6 units Amount of work done by Arjun alone in one day = 180/45 = 4 units Amount of work done by Krunal alone in one day = 180/36 = 5 units Amount of work done by Karan, Arjun and Krunal together in 3 days = 3 × (6 + 4 + 5) = 45 units Amount of work done by Arjun and Krunal together in 5 days = 5 × (4 + 5) = 45 units Remaining work = 180 – 45 – 45 = 90 units So, the time taken by Krunal alone to complete 90 units work = 90/5 = 18 days So, Krunal worked for 18 + 5 + 3 = 26 days
Find the remainder when the number (289n + 147) is divided by 17.
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If x and y are the two digits of the number 115xy such that this number is divisible by 90, then the value of x + y is:
Sahil can make a toy in 3 hrs, 25 minutes and 13 seconds. How much time he will take to make 8 such toys?
How many prime numbers are there between 40 to 50?
"PQR is a three-digit number such that it can be expressed as the sum of its three two-digit components, PQ, QR, and RP, where all of them are natural n...
Find the average of first 24 whole numbers.
Find the average of first 23 whole numbers.