book Maths Puzzle Numerical Ability

systms of linear equations an problem solving the substituition method
3s-4t=14
5s+t=8

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book Other Question

7 2/5% of x is equal to 74. Solve for x.

48% of x=60. Solve for x. Renee can ride her bike 60 miles in 1 hour less time than it takes Sue to ride 60 miles. Renee's rate is 3 miles faster than Sue's rate. Find Renee' rate.

this is as far as I go