exam Maths Puzzle Numerical Ability

A man made a deposit of P1060. iF HIS DEPOSIT CONSISTED OF 42 BILLS, SOME 10PESO BILLS AND THE REST 50 PESO BILLS, HOW MANY OF BILLS OF EACH KIND DID HE HAVE?

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exam Other Question

can someone help me with this problem:

Is this a function:

x^2 + y^2 = 36

a. yes
b. no
c. it depends
d. none of the above

A plane flies 720 mi against a steady 30-mi/h headwind
and then returns to the same point with the wind. If the entire trip takes 10 h, what is the plane�s speed in still air?