exam Maths Puzzle Numerical Ability

-2a(-3c)+(-6y)(6r)

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exam Other Question

"A" IS DRIVING 40 MPH. AFTER "A" AS DRIVEN 30 MILES, "B" STARTS DRIVING IN THE SAME DIRECTION AT WHAT RATE MUST "B" DRIVE TO CATCH UP TO "A" IN 5 HOURS?



3y sqrt 4y^2- sqrt 16y^4+ sqrt18y^3 =3 sqrt2-4y sqrt3

I think I got this one right!!!