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Start learning 50% faster. Sign in now0.1x + 0.05y = 20 10x+5y =2000 2x+y=400 Y = 400-2x… (1) 0.3(x+2) +0.6y = 66. 3x+6+6y =660 3x+6y=654 put the value of Y 3x +6(400-2x) =654 3x +2400-12x =654 9x =1746 x =194. and putting the value of x in eq-1 we get, y = 400 - 2(194) = 400 - 388 = 12
What must be added to each term of the ratio 3:7 so that it may equal to 4:5?
A starts a business with Rs. 5650. After 8 months, B joins with A as his partner. After one year the profit is divided in the ratio 5:8. What is B&rsquo...
A student bought 10 pencils and 8 pens at Rs 150. He sells pencil at 4%profit and pen at 7%profit. Overall, he gains Rs 9 Find the cost price of each pe...
P, Q and R together started a business. Seven times the investment of P equals nine times the investment of Q and the capital of Q is twice that of R. F...
In an office, the ratio of the number of males to number of females is 12:7. If 2 males joined the class and 8 females left the class, then the ratio of...
The ratio of the two numbers is 3:7. 120% of the first number is equal to the 60% of the second number. Find the sum of both the numbers.
What is the third proportional to 9 and 36?
