exam Maths Puzzle Numerical Ability

1/4(60+16s)=15+4s

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exam Other Question

please help simplify5/x+3/x+2 A box contains ten $1 bills, six $5 bills, and four $10 bills. A person is charged $5 to select a bill. What is the expected value?

a. -$1
b. $1
c. -$2
d. -$1.50