please answer the question below

In thegure R1 = 91 Or R2 = 49 Or and the ideal batteries have emfs 1 = 6.0V, 2 = 4.0V, and 3 = 5.0V. Find [a] the current in R1, [bi the current in R2r and (c) the potential difference between points a and b. [a1 Number n Units V [bi Number Units V (c) Number n Units V