exam Maths Puzzle Numerical Ability

JANE FROSTS WANTS TO RECEIVE YEARLY PAYMENTS OF $15,000 FOR 10 YEARS. HOW MUCH MUST SHE DEPOSIT AT HER BANK TODAY AT 11% INTEREST COMPOUNDED ANNUALLY?

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exam Other Question

7x-6
______ = 5. Please tell me how to work out X. Thanks, Emma xx
10
State the conditions for which the system below is: (a) consistent and dependent, (b) consistent and independent and (c) inconsistent.

ax + by = c
dx + ey = f