Question
Lucas, Maya, and Riley can build a wall in 5, 10, and 15
days respectively. If they start the job together and Lucas leaves 3 days before the job is done, while Maya and Riley stay until the end, in how many days is the wall completed?Solution
Lucas, Maya, and Riley can build a wall in 5, 10, and 15 days respectively. LCM of 5,10,15 =30. Total work =30unit The efficiency of Lucas =30/5=6unit. The efficiency of Maya =30/10=3 units. The efficiency of Riley=30/15=2 unit. Suppose the work had not been left by Lucas and Maya. Extra work=6×3=18. total work =30+18=48. time taken =48/11 =4(4/11) days.
What gives red soil its characteristic color?
Which branch of soil science concentrates on the formation, classification, and distribution of soils?
Swarn Jayanti Gram Swarozgar Yojana (SGSY) was launched by the Govt. of India with its effect from
Which among the following is an edible poded variety of garden peas of dual purpose?
In most minerals soils particle density varies within
Which of the following is a bacterial disease in cattle?Â
The green revolution leads to the production of foodgrains basically paddy and wheat, golden revolution is phased out in similar pattern for the product...
What is the purpose of AGMARK certification?
Disorders like Hollow Stem of Cauliflower; Browning of Cauliflower ; Top sickness of Tobacco is caused due to the deficiency ofÂ
Golden rice, which is genetically modified, is rich in:
Relevant for Exams:
