Mathematics
The expression ax + by has value 7 when x = 2 and y = 1. It has value 1 when x = -1 and y = 1. Find a and b.
Related Questions
Solve:
ax + by = c
bx + ay = 1 + cSolve :
0.04x + 0.02y = 5
and 0.5(x - 2) - 0.4y = 29A man invested certain amount of money in two schemes A and B which offer interest at the rate of 8% per annum and 9% per annum respectivley. He received ₹ 1,860 as annual interest. However, if he had interchanged the amount of investments in the two schemes, he would have received ₹ 20 more as annual interest. How much money did he invest in each scheme ?