Question
The daily wages of Happy and Sad respectively are Rs.
4.50 and 3.75. When Happy finishes a certain work, he gets a total wage of Rs. 162. When Sad does the same work, he gets a total wage of Rs. 225. If both of them do it together what is the cost of the work?Solution
Worked day of Happy = 162/4.5 = 36 Worked day of Sad = 225/3.75 = 60 Now, 
Required time = 180/8 = 45/2 days Cost of the work = 45/2 × (4.5 + 3.75) = 185.62 ixamBee Approach : Number of days Happy took to finish the work alone = 162/4.5= 36 Number of days Sad took to finish the work alone = 225/3.75 = 60 Happy’s one day’s work = 1/36 Sad’s one day’s work = 1/60 Work done in one day when Happy and Sad work together = 1/36+ 1/60= (5+3)/180= 8/180= 2/45 work Number of days to finish 2/45 work = 45/2=22.5 days Cost of the work = 22.5 × (4.5 + 3.75) = 185.62
41.66% of 888 + 66.66% of 1176 = ?2 - 4√ 16 Â
Evaluate: 320 − {18 + 4 × (21 − 9)}
Simplify: 72 ÷ 6 × 3 − 8 + 4
118 × 6 + 13 + 83 = ?
Simplify the following expression:
  (400 +175) ² - (400 – 175) ² / (400 × 175)
150% of 850 ÷ 25 – 25 = ?% of (39312 ÷ 1512)
(75 + 0.25 × 10) × 4 = ?2 - 14
26% of 650 + 15% of 660 – 26% of 450 = ?
115% of 40 + 3 × 4 = ? × 11 – 8
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