exam Maths Puzzle Numerical Ability

A can ofdeck stain will cover 150 ft squared. Howmany cans of stain should be purchased in order to stain a pyramid that has a single length of 20 ft. and a slant height of 25 ft.

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exam Other Question
I need help with a couple equation I need to solve concerning logarithms:

1) {{{2ln(x+3)-ln(x+1)=3^ln2}}}


2) {{{2^(5x+3)=3^(2x+1)}}} 5. Solve for x:
(x – 7)/5 – 5/2 = (x + 9)/10