Wesley Teo's answer to Isabelle chew's Secondary 3 E Maths Singapore question.
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Since we are trying to find how much she invested in the 7% scheme, lets just call it X.
Agree that X(0.07) is the amount of interest she has earned from the 7% scheme and that (78000-X) (0.05) is the amount of interest that she will get from the 5% scheme.
That means the total of those 2 amounts is 4800. Solve for X.
Hope this helps
Agree that X(0.07) is the amount of interest she has earned from the 7% scheme and that (78000-X) (0.05) is the amount of interest that she will get from the 5% scheme.
That means the total of those 2 amounts is 4800. Solve for X.
Hope this helps
Date Posted:
5 years ago
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