The average wage of a group of 30 labourers is Rs. 400. If 4 persons receiving average wage of Rs. 320 leave the group and 2 persons receiving average wage of Rs. K join the group, then the average wage of the group increases by Rs. 45. Find the value of ‘K’.
Total wage of 30 labourers in the initial group = 30 × 400 = Rs. 12000 New average wage of the group = 400 + 45 = Rs. 445 New number of labourers in the group = 30 – 4 + 2 = 28 So, according to the question, 12000 – 4 × 320 + 2K = 445 × 28 Or, 12000 – 1280 + 2K = 12460 Or, 12000 + 2K = 12460 Or, 2K = 12460 – 12000 = 1740 Or, K = (1740/2) = 870
Which of the following is true for a completely randomized design?
Vertebrates have a ventral muscular heart with………………..chambers
The use of tensiometer is confined up to metric potential of!
Rice crop is transplanted at spacing of 20 cm ×10cm by using 2 seedlings per hill. Calculate the plant population in 2000m2 area.
Milk of cow is yellowish due to
Palmitic and oleic acids are prominent fatty acids in insects and comprise:
A mechanism of pulleys and cables which were designed to transport a large number of bananas from large plantations to processing / packing plants is _...
…………….. was established in 1972 under the Ministry of commerce and industry for promotion of export of marine products from India.
...___________species of oats covers 80 % of total oats area
The source of the Sun's energy is the process of –
