ALGEBRA / MATH / FINANCIAL
posted by BOBBIE on .
PLEASE HELP.. HERE'S THE QUESTION....
RYAN IS GOING TO INVEST $4000 INTO 2 INVESTMENT OPTIONS. ONE OPTION PAYS 3% AND THE OTHER OPTION PAYS 3.5% SIMPLE INTEREST. HOW MUCH DID RYAN INVEST IN EACH OPTION IF THE INTEREST EARNED IN THE OPTION PAYING 3.5% SIMPLE INTEREST IS $94.50 MORE THAN THE INTEREST EARNED IN THE 3% OPTION?

x at 3%
4000x at 3.5%
.035(4000x) = .03x + 94.50
x = 700
so, $700 at 3%, $3300 at 3.5%
check: .03*700 = 21.00
.035*3300 = 115.50 = 21.00+94.50 
ali's father gave him Rs. 245 for buying stamps. he brought stamps of Rs. 5, Rs. 10 and Rs. 15. the n of the stamps of RS. 5 and Rs. 15 were 2:3 and 1:5 of the no. of Rs. 10 stamps, find the no of each type of stamps he got.