if 64×625=2a×5b ; find :
1) the value of a and b .
2) 2b×5a
priyankajena23082008:
please give the answer on full formula .
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1) 64×625 = 2a×5b
64 = 2a
a = 64/2
a = 32
625 = 5b
b = 625/5
b = 125
2) 2b×5a
2b = 125× 2
2b = 250
5a = 5×32
5a = 160
Therefore, 2a×5n, i.e. 250 × 160 = 40000
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